Act+Acre Salicylic Acid Scalp Exfoliator — 2 oz container

Act+Acre

Salicylic Acid Scalp Exfoliator

Scalp treatment

Scalp treatment
cream
Moisture-rich

Size2 fl oz

Priceabout $48 Good valuecommonly seen · 2 oz

Price / oz$24.00/ozat 2 oz

Where to buy4 stores · $38.40–48.00

Scent:

The ingredient list declares fragrance. What it smells of is not stated, and we do not guess.

“instantly cools + relieves (peppermint oil)” — Brand page

Personal fit

Is this right for you?

Factor Your profile Fit

Best for hair types All types Not in your profile

Moisture level High Not in your profile

Slip / detangling Little Not in your profile

Silicone / wax buildup None Not in your profile

Clarifying wash needed Low Not in your profile

Parabens / preservatives Not determined Not in your profile

Essential oils Present Not in your profile

Vegan / cruelty-free Not yet verified Not in your profile

Animal-derived ingredients Not yet verified Not in your profile

Heavy humectants Heavy Not in your profile

Show all 15 factors we check

The rest of what your plan weighs on this product.

Hard-water defence High Not in your profile

UV filter None listed Not in your profile

Ingredient list 49 ingredientsA long list Not in your profile

Price tier Salon Not in your profile

Where to buy it Brand websiteOne channel Not in your profile

The consultation builds your hair profile, then reads every factor in this table against it — and tells you where this product fits, or what to use instead.

Start your consultation

$49.00 once, for your consultation and hair profile. No subscription, no required purchases.

Priced above most scalp treatments

$24.00/oz at 2 oz — more than 81% of the 152 scalp treatments , which mostly run $3.22–20.64/oz. It sells under what the cost.

Price and stores

Great for

Dry, thirsty hairhumectants and emollients both sit up front

Maybe skip if

this product carries a scent

Dry or very humid airwhere heavy humectants work against you

Tight budgetsit sits in the upper price tiers

Picking it up locallywe have it recorded in one channel only

Whether this much richness is right for you depends on your strand thickness, porosity, and how easily your hair flattens — that is what the consultation works out.

What the formula actually does

Read from the label, not the marketing

Each row says where it comes from: F means we derived it from this product’s own ingredient list, S means it is a claim the brand makes that the formula neither confirms nor contradicts.

Slip and detangling Little

Nothing here is built to reduce combing force.

Oils and butters None

No oils or butters in the list.

Water-binding (humectants) High

Humectants near the top — water-binding is a headline mechanism here.

Needs detergent to remove No

Nothing here needs a detergent wash to remove.

Hard-water defence Chelators present

Chelators are present — they bind hard-water and pool minerals.

from the formula stated by the brand reported by reviewers Scale: 1 dot low · 5 dots high, within this product type.

Ingredients that matter

The ingredients that change a decision

The workhorse ingredients plus anything lower down that changes a decision. These chips name what an ingredient does — they are not safety scores, and no ingredient here is rated good or bad on its own.

Ingredient	What it does	Why it matters	Chip
WaterWater (Aqua)	solvent	The base everything else is dissolved in	Neutral
Methyl Gluceth-20	humectant	Pulls water into the hair	Moisturizes
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer	film former	Lays down the film that holds a shape	Holds
Betaine	humectant	Pulls water into the hair	Moisturizes
Propanediol	humectant	Pulls water into the hair	Moisturizes
Cocamidopropyl Betaine	amphoteric cleanser	—	Cleanses
Glycerin	humectant	Pulls water into the hair	Moisturizes
Acetyl Tetrapeptide-3	—	—	Neutral
Hydrolyzed Corn Protein	film former	A supporting film former	Protein
Mentha Piperita (Peppermint) Oil	botanical extract	A trace plant extract	Fragrance
Menthol	fragrance	The scent	Fragrance
Menthyl Lactate	fragrance	The scent	Fragrance

What the list leaves out, and what it carriesHard-water chelators are present.

Full ingredient list (49)

US labelling rules put ingredients above 1% in descending order of amount; below 1% they may be listed in any order. Annotations keep three readings separate: the ingredient's general function, its role in this product type, and what its position can support.

1 Water · Water (Aqua)

General function
The base of almost every rinse-off and cream hair product. It carries everything else and is normally the first ingredient on the label.

Leading ingredient
Listed in the first three ingredients, it is likely a structural part of this formula.
- solvent
2 Methyl Gluceth-20

General function
A sugar-derived humectant that holds water with a lighter, satin feel rather than glycerin's tack. It also helps other ingredients stay dissolved.

Leading ingredient
Listed in the first three ingredients, it is likely a structural part of this formula.

May suitFine or easily flattened hair
Light and water-binding rather than oily, so it hydrates without contributing weight.

May suitFrizz-prone, damaged, or high-friction hair
Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.

May suitVery dry or highly damaged hair
A small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.
- humectant
- emollient
- solvent
3 Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

General function
A synthetic film-forming polymer. Polymers of this kind dry to a continuous film on the hair, which is how a styling product holds a shape.

Leading ingredient
Listed in the first three ingredients, it is likely a structural part of this formula.
- film former
- polymer
4 Betaine

General function
A sugar-beet derived humectant that binds water. Despite the name it is not a cleanser like cocamidopropyl betaine.

Supporting ingredient
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

May suitDry, coarse, or high-porosity hair
High-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.

May suitVery dry or highly damaged hair
Binds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.

DependsClimate-sensitive or frizz-prone hair
A humectant moves water in whichever direction the air allows: it holds moisture in humid conditions and can pull it back out of hair in very dry ones.

PubChem
- humectant
5 Propanediol

General function
A corn-derived humectant and solvent, often chosen as a lighter-feeling alternative to propylene glycol.

Supporting ingredient
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

May suitFine or easily flattened hair
Light and water-binding rather than oily, so it hydrates without contributing weight.

May suitVery dry or highly damaged hair
A small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.

DependsClimate-sensitive or frizz-prone hair
A humectant follows the air: it holds water in humid conditions and can give it up in very dry ones. Climate decides what it does more than the label does.

PubChem
- humectant
- solvent
6 Cocamidopropyl Betaine

General function
A mild coconut-derived co-cleanser that boosts foam and softens the effect of stronger detergents. It appears in most shampoos, gentle or not.

Supporting ingredient
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

May suitDry, coarse, or high-porosity hair
Mild cleansing leaves more surface lubrication in place on hair that dries out quickly.

May not suitBuild-up-sensitive routines
The mildest detergents are also the least complete: a routine that deposits films needs something stronger periodically.

DependsVery dry or highly damaged hair
Among the mildest detergents in use — it is what baby shampoos are built on — but it is almost always the second detergent in a formula. How much a wash strips is still decided by the primary detergent listed above it.

Indian Journal of Dermatology
- amphoteric cleanser
- secondary cleanser
- cleanser
7 Glycerin

General function
A small water-loving molecule that draws moisture into the hair and holds it there. It is the most common softening ingredient in conditioners and leave-ins.

Supporting ingredient
Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

May suitDry, coarse, or high-porosity hair
High-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.

May suitVery dry or highly damaged hair
Binds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.

DependsClimate-sensitive or frizz-prone hair
Water moves both ways. Measured across concentrations, glycerin solutions give water up in some conditions and take it from the air in others. What it does for you depends on how much of it is there and on the air around it.

Scientific Reports
- humectant
8 Acetyl Tetrapeptide-3
9 Acrylates/C10-30 Alkyl Acrylate Crosspolymer

General function
A gel-forming thickener that also keeps oils suspended. It contributes a little hold.

Secondary ingredient
Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

May suitClimate-sensitive or frizz-prone hair
A set polymer film is a physical barrier to humidity, so a style keeps its shape longer in damp conditions.

May suitMaximum-hold styling
Synthetic film formers dry into a continuous film, which is what holds a shape against movement and against humid air.

DependsBuild-up-sensitive routines
Some acrylate copolymers rinse with water and some need a detergent; the label alone does not say which one a formula used.
- thickener
- polymer
- film former
10 Alanine

General function
An amino acid found in hair protein, used in blends for moisture binding.

Secondary ingredient
Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

May suitVery dry or highly damaged hair
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

DependsProtein-sensitive hair
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
- amino acid
11 Arginine

General function
An amino acid that holds water and carries a positive charge, so it is drawn to damaged spots on the strand.

Secondary ingredient
Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

May suitVery dry or highly damaged hair
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

DependsClimate-sensitive or frizz-prone hair
A humectant follows the air: it holds water in humid conditions and can give it up in very dry ones. Climate decides what it does more than the label does.

DependsProtein-sensitive hair
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.

PubChem
- amino acid
- humectant
▾Below about this point, order stops being meaningful — these are typically used at 1% or less.
12 Aspartic Acid

General function
An amino acid used for moisture binding and to help set an acidic pH.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitVery dry or highly damaged hair
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

DependsFrizz-prone, damaged, or high-friction hair
pH adjusters are how a formula is brought to a chosen acidity, and an acidic formula keeps the cuticle lying flatter than an alkaline one. Which way this one moves the pH depends on the formula, and the finished pH is not on the label.

DependsProtein-sensitive hair
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
- amino acid
- pH adjuster
13 Bis-Diglyceryl Polyacyladipate-2

General function
A rich, lanolin-like emollient used in balms for a soft, sealing finish.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitFrizz-prone, damaged, or high-friction hair
Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.

May suitVery dry or highly damaged hair
Forms a physical barrier on the strand that slows water leaving it. Nothing else in a formula holds moisture in as bluntly.
- emollient
- sealant
14 Butylene Glycol

General function
A light humectant and carrier that helps extracts dissolve.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitFine or easily flattened hair
Light and water-binding rather than oily, so it hydrates without contributing weight.

May suitVery dry or highly damaged hair
A small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.

DependsClimate-sensitive or frizz-prone hair
A humectant follows the air: it holds water in humid conditions and can give it up in very dry ones. Climate decides what it does more than the label does.

PubChem
- humectant
- solvent
15 Caprylyl Glycol

General function
A gentle preservative helper that also holds a little moisture.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitVery dry or highly damaged hair
Humectants bind water into the strand, and water — not oil — is what makes dry hair flexible instead of brittle.

DependsClimate-sensitive or frizz-prone hair
A humectant follows the air: it holds water in humid conditions and can give it up in very dry ones. Climate decides what it does more than the label does.

PubChem
- preservative
- humectant
16 Carbomer

General function
A thickener that turns a liquid into a clear gel. It also contributes a light hold.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitClimate-sensitive or frizz-prone hair
A set polymer film is a physical barrier to humidity, so a style keeps its shape longer in damp conditions.

May suitMaximum-hold styling
Synthetic film formers dry into a continuous film, which is what holds a shape against movement and against humid air.

DependsBuild-up-sensitive routines
Some acrylate copolymers rinse with water and some need a detergent; the label alone does not say which one a formula used.
- thickener
- polymer
- film former
17 Carica Papaya (Papaya) Fruit Extract
- botanical extract
18 Cellulose

General function
Plant fibre used to thicken and give body to a formula.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitCurls or waves needing flexible hold
Gums thicken and set soft, which gives definition that bends rather than a rigid cast.
- thickener
- gum
19 Citric Acid

General function
Used to bring the product to a slightly acidic pH, which helps the cuticle lie flat. It is almost always near the end of the list.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitBuild-up-sensitive routines
Holds hard-water minerals in solution so they rinse away instead of depositing on the hair.

May suitFrizz-prone, damaged, or high-friction hair
The acid side of pH adjustment, and the reason it matters is measured: alkaline formulas raise the fibre's surface negative charge, increase friction between strands and lift the scales, while lower-pH ones do the reverse.

May suitGray, silver, or brass-prone hair
Where a warm cast comes from water minerals rather than from the hair itself, holding those metals in solution is what removes it.

International Journal of Trichology
- pH adjuster
- hard-water chelator
20 Dextran
21 Dipropylene Glycol

General function
A light humectant and solvent that helps fragrance and extracts dissolve evenly.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitFine or easily flattened hair
Light and water-binding rather than oily, so it hydrates without contributing weight.

May suitVery dry or highly damaged hair
A small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.

DependsClimate-sensitive or frizz-prone hair
A humectant follows the air: it holds water in humid conditions and can give it up in very dry ones. Climate decides what it does more than the label does.

PubChem
- humectant
- solvent
22 Ethylhexylglycerin

General function
A preservative booster that also adds a little softness. Almost always paired with phenoxyethanol.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitFrizz-prone, damaged, or high-friction hair
Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.

PubChem
- preservative
- emollient
23 Glycine

General function
The smallest amino acid in hair protein, added for moisture binding.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitVery dry or highly damaged hair
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

DependsProtein-sensitive hair
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.

PubChem
- amino acid
24 Helianthus Annuus (Sunflower) Extract
- botanical extract
25 Histidine

General function
One of the amino acids that make up hair protein, added for moisture binding.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitVery dry or highly damaged hair
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

DependsProtein-sensitive hair
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.

PubChem
- amino acid
26 Hydrolyzed Corn Protein

General function
A plant protein used in strengthening blends, often with wheat and soy.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitFrizz-prone, damaged, or high-friction hair
Filling surface gaps evens out the cuticle, which is part of what makes damaged hair comb and reflect light more like undamaged hair.

May suitMaximum-hold styling
Film formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.

May suitVery dry or highly damaged hair
Hydrolysed fragments are small enough to sit in the gaps of a worn cuticle for a wash or two, temporarily restoring stiffness and cutting breakage in combing.
- film former
- protein
- hydrolysed protein
27 Hydroxypropylcellulose
- gum
- thickener
28 Imperata Cylindrica Root Extract
29 Isoleucine

General function
An amino acid used in conditioning blends that mimic hair's own protein.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitVery dry or highly damaged hair
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

DependsProtein-sensitive hair
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
- amino acid
30 Mentha Piperita (Peppermint) Oil

General function
Peppermint essential oil, used for scent and the cooling feeling on the scalp.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May not suitFragrance-sensitive routines
Essential oils are fragrance. Several carry constituents on the EU list of declared fragrance allergens, so a label with no fragrance line can still be a scented product.
- botanical extract
- essential oil
- fragrance
31 Menthol

General function
Produces the cooling, tingling feeling on the scalp. The sensation is real; it is not evidence that anything else is happening.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May not suitFragrance-sensitive routines
Declared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.

PubChem
- fragrance
- active
32 Menthyl Lactate

General function
A gentler cooling agent than menthol, with less scent.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May not suitFragrance-sensitive routines
Declared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.

PubChem
- fragrance
- active
33 Oryza Sativa (Rice) Bran Extract
- botanical extract
- antioxidant
34 Panthenyl Triacetate
35 Sodium PCA · PCA

General function
A moisture-binding ingredient that occurs naturally in hair and skin.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitDry, coarse, or high-porosity hair
High-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.

May suitVery dry or highly damaged hair
Binds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.

DependsClimate-sensitive or frizz-prone hair
A humectant moves water in whichever direction the air allows: it holds moisture in humid conditions and can pull it back out of hair in very dry ones.

PubChem
- humectant
36 Phenoxyethanol
- preservative
37 Phenylalanine

General function
An amino acid found in hair protein, used in conditioning blends.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitVery dry or highly damaged hair
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

DependsProtein-sensitive hair
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
- amino acid
38 Proline

General function
An amino acid from hair protein, used in amino-acid conditioning blends.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitVery dry or highly damaged hair
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

DependsProtein-sensitive hair
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
- amino acid
39 Rosmarinus Officinalis (Rosemary) Leaf Extract
- botanical extract
- antioxidant
40 Salicylic Acid
- active
- exfoliant
41 Serine

General function
One of the amino acids that make up hair protein, added for water binding.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitVery dry or highly damaged hair
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

DependsProtein-sensitive hair
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
- amino acid
42 Sodium Hydroxide

General function
A strong base used in trace amounts to raise pH; fully neutralised in the finished product.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

DependsFrizz-prone, damaged, or high-friction hair
The alkali half of a pH-adjusting pair, used in small amounts to bring a formula up to its target rather than to make it alkaline. Alkaline conditions raise the fibre's surface charge and lift the scales — but the finished pH is not on the label.

International Journal of Trichology
- pH adjuster
43 Sodium Lactate

General function
A salt of lactic acid used to hold moisture and steady the pH.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitDry, coarse, or high-porosity hair
High-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.

May suitVery dry or highly damaged hair
Binds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.

DependsClimate-sensitive or frizz-prone hair
A humectant moves water in whichever direction the air allows: it holds moisture in humid conditions and can pull it back out of hair in very dry ones.
- humectant
- pH adjuster
44 Sodium PCA

General function
A moisture-binding ingredient that occurs naturally in hair and skin.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitDry, coarse, or high-porosity hair
High-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.

May suitVery dry or highly damaged hair
Binds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.

DependsClimate-sensitive or frizz-prone hair
A humectant moves water in whichever direction the air allows: it holds moisture in humid conditions and can pull it back out of hair in very dry ones.

PubChem
- humectant
45 Tetrasodium Glutamate Diacetate

General function
A biodegradable hard-water chelator used in place of EDTA.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitBuild-up-sensitive routines
Binds the calcium and magnesium in hard water, which is what stops mineral deposits accumulating on the strand wash after wash.

May suitGray, silver, or brass-prone hair
Copper and iron carried in tap water deposit on the strand and read as a dull, warm cast on gray or light hair. A chelator holds those metals in solution so the wash carries them off.

PubChem
- hard-water chelator
46 Threonine

General function
An amino acid used in conditioning blends for moisture binding.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitVery dry or highly damaged hair
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

DependsProtein-sensitive hair
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
- amino acid
47 Tocopherol
- antioxidant
- vitamin
48 Trifolium Pratense (Clover) Flower Extract
- botanical extract
49 Valine

General function
An amino acid used in hair conditioning blends.

Estimated lower-concentration zone
It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

May suitVery dry or highly damaged hair
Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

DependsProtein-sensitive hair
The lightest option in the protein family, but still protein — worth watching if protein reliably stiffens your hair.
- amino acid

What the whole list adds up to

11 humectants
11 amino acids
6 botanical extracts
5 solvents
4 film formers
4 thickeners
4 pH adjusters
3 emollients
3 polymers
3 preservatives
3 fragrances
3 actives
3 antioxidants
2 gums

Drug facts actives

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This product is an over-the-counter drug as well as a cosmetic. It treats a cosmetic scalp condition; it does not diagnose or treat disease.

Ingredient list captured 2026-09-16. Formulas change — check the package in your hand when an ingredient matters to you.

Price · 2 oz

Commonly seen about $48 Midpoint $48 · 3 stores · checked Sep 17

Good value under $49 Under $24.50/oz it costs less than three-quarters of the 7 products we score as doing the same job

Usually a good value. Most stores sell it under the $49 line, and products that do this job typically go for about $50 at this size.

Show the price ladder

Price for 2 ozlower is better

Where we’ve seen it4 listings · 4 stores

Act+Acre (actandacre.com)
$38.40

2 oz · $19.20/oz

Sep 16Lowest per oz
Sephora
$48.00

2 oz · $24.00/oz

Sep 17
Act+Acre
$48.00

2 oz · $24.00/oz

Sep 17
Anthropologie
$48.00

2 oz · $24.00/oz

Sep 17

Sorted by price per ounce. Dated observations from our research, not live prices. Direct store pages, no affiliate links. We don’t sell this product.

How we work this out

2 oz is the size stores list most often; every comparison on this page is made at it. Other sizes are shown in the Sizes row and the store list.
Commonly seen is the middle half of current prices for the 2 oz at recognised stores — the cheapest quarter and the dearest quarter are left out, so one sale or one overpriced listing can’t move it.
Good value under $49 comes from the 7 products we score as doing the same job as this one. A quarter of them cost less than $24.50/oz; at 2 oz that is $49. Under that line you are paying less than most of them.
About $50 is what those same products typically cost at this size — the midpoint of their prices per ounce, scaled to 2 oz.

Formula

Formula score

5 of 10

Above the range for scalp treatments per ounce, on a formula that covers the middle of the format and has no close, cheaper equivalent in our library.

How the score is counted

Nothing in our library does the same job for less
Costs more per ounce than 81% of the 152 scalp treatments we’ve priced
No conditioning agents up front in the formula
Reviewers mention 3 things they like about how it performs

Conditioning agents up frontWhat makes wet hair comb through.3 pts
Oils or butters in the working zoneSoftens the strand rather than just coating it.2 pts
Slip for detanglingReduces the force it takes to comb wet hair.2 pts
A humectantBinds water into the hair.1 pt
A pH adjusterBrings the formula to the acidic pH hair prefers.1 pt
Fragrance kept out of the top eightScent as a finishing touch, not a major share.1 pt

The formula score is completeness for the job: the share of the systems this product type is normally built around that we can find in this list, weighted. It is not efficacy, not quality, and it never compares across product types.

Does the same job

Same derived functions — what it cleans, conditions, coats or holds — at a lower cost per ounce. Scent, texture and where you buy it can still differ.

Color WowClosest function Youth Juice Collagen Scalp Serum $27.06/oz $3.06/oz more

Fragrance-free
Lightweight
Silicone-free

Differs: Vegan
Prestige tier
1.7 oz bottle

Compare

BosleyLowest cost per oz Revive+ Densifying Serum for Women $24.99/oz $0.99/oz more · Close function

Differs: Masstige tier
1 oz bottle

Compare

KilgourMDClose function The Prevention Scalp Serum

Scalp active

Differs: Prestige tier

Compare

See more alternatives in the product library

These are functional neighbours, not personal recommendations — they are close on formula, not chosen for anyone. Get the one that fits your hair, routine, and budget

Final decision

Should you buy it?

Only if you need exactly this

Best user

Hair that craves moisture, looking for moisture that stays in

Biggest tradeoff

Worth skipping for anyone sensitive to fragrance, very dry or very humid climates, or people shopping on a budget

Best alternative if not

Nothing in our library matches it closely at a lower price.

We do not sell products or take placement fees. This page states what the formula and the prices show; the consultation is what matches it to a person.

Claims check

What the brand says, against what the formula shows

Claims are quoted from the brand. We only mark one supported, partly supported, or conflicting when the ingredient list actually speaks to it; everything else stays "stated by the brand", which is not a criticism — most claims simply cannot be read off a label.

SupportedBacked by ingredients

Partly supportedSome supporting logic

Stated by brandNo clear evidence

Potential conflictFormula works against claim

Exfoliates the scalp to clear loose flakes

No over-the-counter anti-dandruff active appears in the list.

—

Stated by brand

Soothing, not an active treatment.

Combats excess scalp sebum + oil

This is a marketing claim; an ingredient list cannot speak to it.

—

Stated by brand

Can’t be confirmed from label.

Alleviates scalp itch + sensitivity

This is a marketing claim; an ingredient list cannot speak to it.

—

Stated by brand

Can’t be confirmed from label.

How to read this

We look at the first 10–15 ingredients and what they do in a formula — not marketing. If the list doesn't speak to a claim, we don't assume.

Reviewers

What people report

Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings.

many reviewers with oily or flaky scalps say weekly use noticeably reduces oil buildup and extends time between washes

reviewers managing oily scalp or dandruff/flaking

reviewers describe a strong cooling, tingling sensation from the peppermint/menthol that they find soothing for itch and sensitivity

reviewers with scalp itch or sensitivity, including one undergoing chemotherapy

several long-time users pair it weekly with the brand's shampoo/conditioner or scalp oil and credit it with reduced shedding and visible new growth

reviewers layering it into a full Act+Acre scalp routine

a few reviewers wish the tube were larger for the price given how much is needed to cover a full scalp

reviewers with a lot of hair/thicker density

How this page was made

Everything above is generated from our researched product record — identity, the ingredient list as printed, the brand's own claims, dated price observations, and review themes written in our researchers' own words. No part of this page is written per product.
The value band is a fixed label over two stored numbers: this product’s cost per ounce as a percentile of every product of this type we have priced, each at the size it is most often sold in, and how many products we score as doing the same job cost at least a quarter less per ounce.
Both scores out of ten are defined on this page. The formula score is completeness for the job, computed from a fixed per-format checklist shown beneath the gauge; the price score is cost per ounce against every product of this type we have priced.
The "Is this right for you?" panel reads only your own consultation answers, and it applies exactly the filters our recommendation engine applies. It is computed when you load the page and is never stored on it.
4 sources consulted for this product (2 manufacturer or regulatory, 0 retailer, 2 editorial), last checked 2026-09-17.
Ingredient references are linked for 18 of 34 product-aware annotations on this page. Fit notes are conditional formulation guidance, not a conclusion about the finished product or about you.
We have not tested this product in a lab and we do not physically test your hair. Formula readings come from the ingredient list; behaviour claims are labelled as the brand's.
Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice.
Ingredient names link to our ingredient library, where each entry shows what it does, which product types use it, and where it usually sits on a label across everything we have researched.
This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.
Formula readings: derivation v22. Record last updated 2026-09-17.

Salicylic Acid Scalp Exfoliator

Is this right for you?

Read from the label, not the marketing

The ingredients that change a decision

What the whole list adds up to

Drug facts actives

Should you buy it?

What the brand says, against what the formula shows

What people report

More from Act+Acre

How this page was made

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