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UNITE Hair

RE:UNITE Silky:Smooth Heat Activator

Leave-in / Everyday leave-in, medium-weight

  • Leave-in
  • Sulfate-free
  • Protein-free
  • Moisture-rich
  • Cruelty-free · PETA-listed
Size6oz/177mlusual store size · 2 sizes
Price$35–36commonly seen · 6 oz · from $2.97/oz in the 15.99 oz
Price / oz$6.00/ozat 6 oz
Where to buy5 stores · 2 sizes

Add it to your products. We’ll tell you if it’s ever recalled.

Scent:

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

Manufacturer page: unitehair.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.

  • About 20 minutes, and your answers save as you go.
  • Every product matched against your hair across the 21 factors we check.
  • A personalized routine built around your schedule, styling habits, and local weather.
  • 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.

Start your consultation

Same job for less elsewhere

$6.00/oz at 6 oz, more than 78% of the 749 leave-ins , which mostly run $1.31–5.50/oz.

View alternatives

Great for

Protein-sensitive hairthat stiffens when protein is added
Dry, thirsty hairhumectants and emollients both sit up front
Curl definitionfilm formers hold a clump together
Very dry hairno fast-drying alcohol in the list
A wide range of haira middle-of-the-range weight

Maybe skip if

this product has a scent
Curly-method routinesthese silicones need a detergent to remove
Hair that needs proteinthere is none in this list
Hair that tangles wetnothing here makes combing easier
Dry or very humid airwhere heavy humectants work against you
Tight budgetsit sits in the upper price tiers

Whether this weight suits your hair depends on density, porosity and how much you already layer. That is what the consultation looks at.

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.

Weight on the hair Medium

Middle of the range: noticeable on fine hair, light on coarse hair.

Slip and detangling Some

Some slip, mostly from esters or silicones rather than conditioners.

Water-binding (humectants) High

Humectants near the top: binding water is one of its main jobs.

Oils and butters Present, high in the list

Oils sit high in the list: a softening, coating formula.

Protein None

No protein or amino acids in the list.

Needs detergent to remove Yes

Water-insoluble silicones or waxes: a detergent wash is what removes them.

Fragrance Prominent

Fragrance is in the first eight ingredients, so it makes up a larger share of the formula.

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. The chips name what an ingredient does. They are not safety scores, and no ingredient here is rated good or bad on its own.

IngredientWhat it doesWhy it mattersChip
WaterWater/Aqua/Eau solvent The base everything else is dissolved in Neutral
Ethyl Macadamiate light ester Light slip without much weight Softens
Dipropylene Glycol humectant Pulls water into the hair Moisturizes
Olus OilOlus Oil/Vegetable Oil oil Coats and softens the strand Softens
Polysilicone-29 silicone Smooths the cuticle and adds shine Buildup
Glycerin humectant Pulls water into the hair Moisturizes
Polyglyceryl-2 Dipolyhydroxystearate emulsifier Keeps oil and water mixed Softens
FragranceFragrance/Parfum fragrance The scent Fragrance
Citral fragrance The scent Fragrance
Limonene fragrance The scent Fragrance
Hexyl Cinnamal fragrance The scent Fragrance
Linalool fragrance The scent Fragrance
What the list leaves out, and what it carriesThe list carries no sulfates or drying alcohols. No protein: a moisture formula, not a repair one. Fragrance is on the label. Water-insoluble silicones that need a detergent wash to remove.
Full ingredient list (19)

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/Eau
    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 Ethyl Macadamiate
    General function

    A light macadamia-derived ester used for a dry, silky finish.

    Leading ingredient

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

    May suitFine or easily flattened hair

    A light emollient: it softens the surface with noticeably less weight than an oil or a butter.

    May suitFrizz-prone, damaged, or high-friction hair

    Spreads thin and lowers friction between strands without the heaviness of a fixed oil.

    • light ester
    • emollient
  • 3 Dipropylene Glycol
    General function

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

    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 adds less weight than oils or butters do.

    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
  • 4 Olus Oil · Olus Oil/Vegetable Oil
    General function

    The oil pressed from Olus. How much weight a plant oil leaves depends on the hair it lands on; coarse hair tends to take more of it than fine hair.

    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

    Coats the surface and slows water leaving the strand, which is usually what coarse hair that dries out fast is missing.

    May suitFrizz-prone, damaged, or high-friction hair

    A thin oil layer lowers friction between strands and flattens the raised cuticle that scatters light and catches on its neighbours.

    May not suitFine or easily flattened hair

    Near the top of a list an oil is weight before it is anything else, and fine hair shows that first at the roots.

    • oil
    • emollient
  • 5 Polysilicone-29
    General function

    A silicone network that leaves a longer-lasting smoothing film than plain dimethicone.

    Supporting ingredient

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

    May suitClimate-sensitive or frizz-prone hair

    A surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.

    May suitFrizz-prone, damaged, or high-friction hair

    Lays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.

    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.

    • silicone
    • film former
  • 6 Glycerin
    General function

    Glycerin, also called glycerol, attracts moisture and mixes completely with water.

    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
  • 7 Polyglyceryl-2 Dipolyhydroxystearate
    General function

    A plant-derived polyglycerol ester. It emulsifies without ethoxylation, which is why it turns up in formulas positioned as PEG-free, and leaves a soft feel.

    Supporting ingredient

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

    • emulsifier
    • emollient
  • ▾Below about here, the order stops meaning much. These are usually used at 1% or less.
  • 8 Fragrance · Fragrance/Parfum
    General function

    An undisclosed blend of scent ingredients. Regulations let it stay unlisted, so a fragrance-free product is the only way to be certain what is not in it.

    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.

    • fragrance
    • declared fragrance
  • 9 Lauryl Glucoside
    General function

    A mild sugar-derived cleanser with a soft, low lather.

    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

    Mild cleansing leaves more surface lubrication in place on hair that dries out quickly.

    May suitVery dry or highly damaged hair

    A 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 routines

    Gentle cleansing leaves water-insoluble deposits largely in place; they come off with a stronger wash, not this one.

    PubChem
    • nonionic cleanser
    • cleanser
  • 10 Glyceryl Oleate
    General function

    An emulsifier that also softens, often added to make a cleanser feel less stripping.

    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.

    • emulsifier
    • emollient
  • 11 Dicaprylyl Carbonate
    General function

    A very light ester that spreads instantly and leaves a dry, silky 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 suitFine or easily flattened hair

    A light emollient: it softens the surface with noticeably less weight than an oil or a butter.

    May suitFrizz-prone, damaged, or high-friction hair

    Spreads thin and lowers friction between strands without the heaviness of a fixed oil.

    PubChem
    • light ester
    • emollient
  • 12 Decylene Glycol
  • 13 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
  • 14 Disodium EDTA
    General function

    Grabs metal ions from hard water so they cannot dull the hair or destabilise the 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 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
  • 15 Phenoxyethanol
    • preservative
  • 16 Citral
    General function

    A lemon-scented fragrance component listed separately as a recognised allergen.

    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

    One of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.

    PubChem
    • fragrance
    • named fragrance allergen
  • 17 Limonene
    General function

    A citrus-smelling fragrance component that EU rules require to be named separately because some people react to it.

    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

    One of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.

    PubChem
    • fragrance
    • named fragrance allergen
  • 18 Hexyl Cinnamal
    General function

    A jasmine-like fragrance component named separately as a recognised allergen.

    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

    One of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.

    PubChem
    • fragrance
    • named fragrance allergen
  • 19 Linalool
    General function

    A floral fragrance component listed separately as a recognised contact allergen.

    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

    One of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.

    PubChem
    • fragrance
    • named fragrance allergen

What the whole list adds up to

  • 5 emollients
  • 5 fragrances
  • 4 named fragrance allergens
  • 3 humectants
  • 2 solvents
  • 2 light esters
  • 2 emulsifiers
  • 2 preservatives
  • 1 oil
  • 1 silicone
  • 1 film former
  • 1 declared fragrance
  • 1 nonionic cleanser
  • 1 cleanser

Ingredient list captured 2026-10-08. Formulas change, so check the package in your hand when an ingredient matters to you.

Price · 6 oz

Commonly seen $35–36 Midpoint $36 · 3 stores · checked Oct 8
Good value under $6 Under $1.07/oz it costs less than three-quarters of the 8 products we score as doing the same job

Priced above the products that do the same job. Stores sell it above the $6 line; products that do this job typically go for about $7 at this size.

Sizes

6 ozusual store size
$35–36
$6.00/oz
15.99 oz
$47.50
$2.97/oz

The 15.99 oz costs 50% less per ounce than the 6 oz.

Show the price ladder
Where we’ve seen it6 listings · 4 stores

6 ozusual store size

15.99 ozBest per ounce

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
  1. 6 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.
  2. Commonly seen is the middle half of current prices for the 6 oz at recognised stores. We leave out the cheapest and most expensive quarters, so one sale or one overpriced listing can’t move it.
  3. Good value under $6 comes from the 8 products we score as doing the same job as this one. A quarter of them cost less than $1.07/oz; at 6 oz that is $6. Under that line you are paying less than most of them.
  4. Each size is guarded on its own, so a multipack or a marketplace listing at one size cannot move another.
  5. About $7 is what those same products typically cost at this size: the midpoint of their prices per ounce, scaled to 6 oz.

Formula

Formula score
6 of 10

Above the range for leave-ins per ounce for a formula that 6 lower-priced products come close to on ingredients and attributes.

How the score is counted
  • 6 products that do the same job cost less per ounce
  • Costs more per ounce than 78% of the 749 leave-ins we’ve priced
  • No conditioning agents up front in the formula
  • Reviewers mention 2 things they like about how it performs
  • Conditioning agents up frontWhat makes wet hair comb through.2 pts
  • A humectantBinds water into the hair.2 pts
  • A light baseWater or a volatile carrier first, so it does not weigh hair down.2 pts
  • Oils or butters in the working zoneSoftens the strand rather than just coating it.2 pts
  • 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.

Luster's PinkLowest cost per oz SCURL TEXTURIZER STYLIN’ SPRAY $1.12/oz $4.88/oz less
  • Protein-free
  • Alcohol-free
  • Medium weight
· Close function
Function
  • Slip and detangling
Also
  • Drugstore tier
  • 8 oz bottle
Compare
Luster's PinkClose function SHORTLOOKS SASSAFRAZ QUENCH MOISTURE MIST $1.12/oz $4.88/oz less
  • Protein-free
  • Alcohol-free
  • Medium weight
Function
  • Slip and detangling
Also
  • Drugstore tier
  • 8 oz bottle
Compare
Luster's PinkClose function SCURL NO DRIP CURL ACTIVATOR MOISTURIZER $1.37/oz $4.63/oz less
  • Budget
Function
  • Slip and detangling
Also
  • Drugstore tier
  • 8 oz bottle
Compare

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

Suits every hair pattern

Final decision

Should you buy it?

Hard to justify at this price
Best user

Hair that stiffens on protein who want a protein-free formula and moisture that stays in

Biggest tradeoff

Less suited to anyone sensitive to fragrance, curly-method routines, or soft, over-stretchy hair that needs protein

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.

Reviewers

What people report

Themes that come up again and again in sourced reviews, written by our researchers in their own words. We don’t store or scrape star ratings.

Many reviewers say the spray tames frizz and leaves hair looking shinier and smoother.

Reviewers across hair types

Several reviewers use it before heat styling and feel their hair is shielded from their tools.

Reviewers who heat style their hair

Some reviewers say it is hard to style with, feels sticky, and gave poor styling results on coarse hair.

Reviewers with long, coarse hair

Reviewers disagree on weight, as some say it makes fine hair limp while others say it stays light.

Reviewers with fine hair and reviewers with other hair types

More from UNITE Hair

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.
  • 3 sources consulted for this product (1 manufacturer or regulatory, 1 retailer, 1 editorial), last checked 2026-10-31.
  • Ingredient references are linked for 10 of 15 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.

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