Sizes & containers
5.0 fl. oz. · $40 at one store · UPC 03282770108224
Curbicia Purifying Lightness Shampoo
Shampoo / Everyday cleanser, balanced
- Shampoo
- Sulfate-free
- Silicone-free
Add it to your products. We’ll tell you if it’s ever recalled.
Scent:
No added fragrance on the label, but it contains scenting botanicals. Essential oils have a smell even when they are not labelled as fragrance.
Manufacturer page: renefurtererusa.com
Personal fit
Is this right for you?
Complete the consultation to see how well this product fits your hair and your goals. With 6,000+ products in our library, we can match you to the right ones.
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- Every product matched against your hair across the 22 factors we check.
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- Find products that do the same job at a lower cost.
- Your goals, scalp, damage history, water, budget, and scent preferences all shape your plan.
$49 with 60 days of follow-up questions and plan updates
$99 with 12 months. Pay once; the year renews only if you choose.
Show all 22 factors we check
The rest of what your plan weighs on this product.
The consultation builds your hair profile, checks every factor in this table against it, and tells you where this product fits or what to use instead.
Start your consultation$49 once, with 60 days of follow-up questions and plan updates. Nothing renews, and you never have to buy a product.
Your avoid-list
Same job for less elsewhere
$8.00/oz at 5 oz, more than 98% of the 1544 shampoos , which mostly run $0.79–3.04/oz.
Great for
Maybe skip if
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.
Removes oil and product; leaves some conditioning behind.
An ordinary shampoo lather.
Conditioning agents sit high in the list, so this is a detangling formula.
Humectants near the top: binding water is one of its main jobs.
No over-the-counter scalp active.
Contains chelators, which bind hard-water and pool minerals.
Nothing here needs a detergent wash to remove.
No protein or amino acids in the list.
No fragrance is listed.
Ingredients that matter
The ingredients that change a decision
The workhorse ingredients, plus anything lower down that changes a decision. The 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 |
| Decyl Glucoside | nonionic cleanser | — | Cleanses |
| Sodium Cocoyl Isethionate | mild anionic cleanser | — | Cleanses |
| Disodium Laureth Sulfosuccinate | mild anionic cleanser | — | Cleanses |
| Glycerin | humectant | Pulls water into the hair | Moisturizes |
| Oleth-10 | emulsifier | Keeps oil and water mixed | Stabilizes |
| Disodium Cocoamphodiacetate | amphoteric cleanser | — | Cleanses |
| Polyquaternium-22 | film former | Lays down the film that holds a shape | Detangles |
| Camphor | fragrance | The scent | Fragrance |
| Citrus Aurantium Dulcis (Orange) Peel Oil | fragrance | The scent | Fragrance |
| Rosmarinus Officinalis (Rosemary) Leaf OilROSMARINUS OFFICINALIS (ROSEMARY) LEAF OIL (ROSMARINUS OFFICINALIS LEAF OIL) | botanical extract | A trace plant extract | Fragrance |
Full ingredient list (32)
In the US, ingredients above 1% are listed from most to least. Below 1% they can appear in any order. Each note keeps three things apart: what the ingredient generally does, its role in this type of product, and what its position can tell you.
-
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 ingredientListed in the first three ingredients, it is likely a structural part of this formula.
- solvent
-
2
Decyl Glucoside
General function
A sugar-derived, low-foam cleanser used in gentle and curly-method shampoos.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
PubChemMay suitDry, coarse, or high-porosity hairMild cleansing leaves more surface lubrication in place on hair that dries out quickly.
May suitVery dry or highly damaged hairA sugar-derived non-ionic detergent, among the gentlest in use. It cleanses with little foam of its own and little sebum removal.
May not suitBuild-up-sensitive routinesGentle cleansing leaves water-insoluble deposits largely in place; they come off with a stronger wash, not this one.
- nonionic cleanser
- cleanser
-
3
Sodium Cocoyl Isethionate
General function
A mild cleanser that gives a creamy lather and leaves hair less stripped than sulfates.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
May suitCurls or waves needing flexible holdThe detergent class most curl routines are built around: it lathers and cleanses without stripping the strand back to bare.
May suitDry, coarse, or high-porosity hairA gentler detergent leaves more of the surface oil that slows water loss from coarse or porous hair.
May suitVery dry or highly damaged hairCleanses with less sebum removal than a sulfate detergent, so hair that is short of moisture keeps more of it through the wash.
- mild anionic cleanser
- cleanser
-
4
Disodium Laureth Sulfosuccinate
General function
A mild cleanser used to soften a formula built on stronger detergents.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
May suitCurls or waves needing flexible holdThe detergent class most curl routines are built around: it lathers and cleanses without stripping the strand back to bare.
May suitDry, coarse, or high-porosity hairA gentler detergent leaves more of the surface oil that slows water loss from coarse or porous hair.
May suitVery dry or highly damaged hairCleanses with less sebum removal than a sulfate detergent, so hair that is short of moisture keeps more of it through the wash.
- mild anionic cleanser
- cleanser
-
5
Glycerin
General function
Glycerin, also called glycerol, attracts moisture and mixes completely with water.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
Scientific ReportsMay suitDry, coarse, or high-porosity hairHigh-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 hairBinds 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 hairWater 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.
- humectant
-
6
Oleth-10
General function
An emulsifier used to disperse oils and fragrance.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
- emulsifier
- solubilizer
-
7
Disodium Cocoamphodiacetate
General function
A very mild cleanser that softens the effect of stronger detergents.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
May suitDry, coarse, or high-porosity hairMild cleansing leaves more surface lubrication in place on hair that dries out quickly.
May suitVery dry or highly damaged hairOne of the mildest detergent classes. It is usually there to let a formula lather without a harsher detergent doing the work.
May not suitBuild-up-sensitive routinesThe mildest detergents are also the least complete: a routine that deposits films needs something stronger periodically.
- amphoteric cleanser
- secondary cleanser
- cleanser
-
8
Polyquaternium-22
General function
A conditioning polymer that adds slip and helps hold moisture on the strand.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
May suitCurls or waves needing flexible holdCationic polymers hold a curl loosely and stay soft, which is why they turn up in definition products rather than firm-hold ones.
May suitFrizz-prone, damaged, or high-friction hairA cationic polymer stays on the hair through rinsing, which is what keeps static and combing friction down after the wash.
May suitMaximum-hold stylingFilm formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
- film former
- polymer
- conditioning agent
-
9
Acrylates Copolymer
General function
A hold polymer that forms a firm, humidity-resistant film. It is the usual source of a hard cast in gels.
Secondary ingredientLower 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 hairA set polymer film is a physical barrier to humidity, so a style keeps its shape longer in damp conditions.
May suitMaximum-hold stylingSynthetic film formers dry into a continuous film, which is what holds a shape against movement and against humid air.
DependsBuild-up-sensitive routinesSome acrylate copolymers rinse with water and some need a detergent; the label alone does not say which one a formula used.
- film former
- polymer
-
10
Ceteareth-60 Myristyl Glycol
- emulsifier
- ▾Below about here, the order stops meaning much. These are usually used at 1% or less.
-
11
Camphor
General function
Produces a cooling, medicinal sensation on the scalp and contributes scent.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay not suitFragrance-sensitive routinesDeclared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.
- fragrance
- active
-
12
Caprylyl Glycol
General function
A gentle preservative helper that also holds a little moisture.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay suitVery dry or highly damaged hairHumectants bind water into the strand, and water — not oil — is what makes dry hair flexible instead of brittle.
DependsClimate-sensitive or frizz-prone hairA 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.
- preservative
- humectant
-
13
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 zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
International Journal of TrichologyMay suitBuild-up-sensitive routinesHolds hard-water minerals in solution so they rinse away instead of depositing on the hair.
May suitFrizz-prone, damaged, or high-friction hairThe 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 hairWhere a warm cast comes from water minerals rather than from the hair itself, holding those metals in solution is what removes it.
- pH adjuster
- hard-water chelator
-
14
Citrus Aurantium Dulcis (Orange) Peel Oil
General function
Orange peel oil used for a fresh citrus scent; naturally high in limonene.
Estimated lower-concentration zoneIt 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 routinesDeclared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.
- fragrance
- botanical extract
- 15 (CITRUS AURANTIUM DULCIS PEEL OIL) OCO-GLUCOSIDE
-
16
Coconut Acid
- emulsifier
- salt
- 17 CUCURBITA PEPO (PUMPKIN) SEED OIL (CUCURBITA PEPO SEED OIL)
- 18 EUGENIA CARYOPHYLLUS (CLOVE) FLOWER OIL (EUGENIA CARYOPHYLLUS FLOWER OIL)
-
19
Glyceryl Oleate
General function
An emulsifier that also softens, often added to make a cleanser feel less stripping.
Estimated lower-concentration zoneIt 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 hairEmollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.
- emulsifier
- emollient
-
20
Glycol Stearate
General function
A wax that makes shampoo look pearly and adds a slightly richer feel.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay suitFrizz-prone, damaged, or high-friction hairEmollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.
- opacifier
- emollient
- 21 GREEN 3
-
22
Hydrogenated Vegetable Glycerides
- emollient
- emulsifier
- thickener
- 23 CITRATE
-
24
Laureth-3
- emulsifier
-
25
Maleic Acid
General function
An acid used to adjust pH and, in bond-repair systems, as part of the reactive chemistry.
Estimated lower-concentration zoneIt 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 hairpH 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.
- pH adjuster
-
26
Rosmarinus Officinalis (Rosemary) Leaf Oil
· ROSMARINUS OFFICINALIS (ROSEMARY) LEAF OIL (ROSMARINUS OFFICINALIS LEAF OIL)
General function
Rosemary essential oil, used for scent and its traditional scalp reputation.
Estimated lower-concentration zoneIt 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 routinesEssential 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
-
27
Sodium Benzoate
- preservative
-
28
Sodium Chloride
- salt
- thickener
-
29
Sodium Hydroxide
General function
A strong base used in trace amounts to raise pH; fully neutralised in the finished product.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
International Journal of TrichologyDependsFrizz-prone, damaged, or high-friction hairThe 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.
- pH adjuster
- 30 THYMUS VULGARIS (THYME) FLOWER/LEAF OIL (THYMUS VULGARIS FLOWER/LEAF OIL)
-
31
Tocopherol
- antioxidant
- vitamin
-
32
Trisodium Ethylenediamine Disuccinate
General function
A readily biodegradable chelator used in place of EDTA to bind hard-water minerals.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay suitBuild-up-sensitive routinesBinds 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 hairCopper 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.
- hard-water chelator
What the whole list adds up to
- 6 emulsifiers
- 4 cleansers
- 3 fragrances
- 3 pH adjusters
- 3 emollients
- 2 mild anionic cleansers
- 2 humectants
- 2 film formers
- 2 polymers
- 2 preservatives
- 2 hard-water chelators
- 2 botanical extracts
- 2 salts
- 2 thickeners
Ingredient list captured 2026-10-07. Formulas change, so check the package in your hand when an ingredient matters to you.
Price · 5 oz
Priced above the products that do the same job. Stores sell it above the $11 line; products that do this job typically go for about $17 at this size.
Show the price ladder
Where we’ve seen it1 listing · 1 store
-
Rene Furterer (brand site)
$40.005 oz · $8.00/ozOct 7Lowest per oz
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
- 5 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.
- Seen at $40 is the price we have observed for the 5 oz. We need three stores before we call a price commonly seen.
- Good value under $11 comes from the 8 products we score as doing the same job as this one. A quarter of them cost less than $2.23/oz; at 5 oz that is $11. Under that line you are paying less than most of them.
- About $17 is what those same products typically cost at this size: the midpoint of their prices per ounce, scaled to 5 oz.
Formula
This is a complete shampoo formula. It is also above the range for shampoos per ounce, with 8 close matches selling for meaningfully less.
How the score is counted
- 8 products that do the same job cost less per ounce
- Costs more per ounce than 98% of the 1544 shampoos we’ve priced
- Covers 7 of the 7 things a shampoo should do
- Salon tier, sold at Brand website
- A working detergent systemWhat actually removes oil and product.3 pts
- Slip for detanglingReduces the force it takes to comb wet hair.2 pts
- A humectantBinds water into the hair.1 pt
- A hard-water chelatorBinds the minerals that dull hair in hard water.1 pt
- A pH adjusterBrings the formula to the acidic pH hair prefers.1 pt
- No detergent-dependent filmNothing that needs a clarifying wash to remove.1 pt
- Fragrance kept out of the top eightScent as a finishing touch, not a major share.1 pt
The formula score measures completeness for the job: a weighted share of the systems this product type is usually built around that we find in this list. It does not rate how well the product works or its quality, and it never compares across product types.
Does the same job, for less
Formulas that do the same things (cleanse, condition, coat or hold) for less per ounce. Scent, texture and where you buy them can still differ.
- Sulfate-free
- Protein-free
- Curly method
- Function
- Also
- Sulfate-free
- Protein-free
- Curly method
- Function
- Also
- Sulfate-free
- Protein-free
- Curly method
- Function
- Also
See more alternatives in the product library
These products do a similar job. We haven’t matched them to you. Find the one that fits your hair, routine and budget
Final decision
Should you buy it?
Good for the right person, not the lowest costPeople sensitive to fragrance who want a formula with no added fragrance and washing without sulfates
Worth skipping for anyone sensitive to fragrance, soft, over-stretchy hair that needs protein, or very dry or very humid climates
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.
More from Rene Furterer
How this page was made
- Everything above comes from our researched product record: identity, the ingredient list as printed, the brand's own claims, dated prices and review themes our researchers wrote in their own words. No part of this page is written by hand for one 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.
- 2 sources consulted for this product (0 manufacturer or regulatory, 0 retailer, 2 editorial), last checked 2026-10-08.
- Ingredient references are linked for 8 of 17 product-aware annotations on this page. Fit notes are general formulation guidance. They aren’t a verdict on the finished product or on you.
- We haven’t tested this product in a lab, and we don’t physically test your hair. Formula readings come from the ingredient list. Claims about how it behaves are labelled as the brand's.
- Ingredient order tells you relative amount only above roughly 1%. Prices are what we saw on the dates shown and can change.
- 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 v23. Record last updated 2026-10-08.
