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Rene Furterer

Sublime Karité Professional Smoothing Milk

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

  • Leave-in
  • Sulfate-free
  • Silicone-free
  • Protein-free
Size3.3 fl. oz.
Price$38seen at one store · 3.38 oz
Price / oz$11.24/ozat 3.38 oz
Where to buy3 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: 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.

  • About 20 minutes, and your answers save as you go.
  • Every product matched against your hair across the 21 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.

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Same job for less elsewhere

$11.24/oz at 3.38 oz, more than 95% 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
Curly-method routinesno sulfates and no water-insoluble silicones
Curl definitionfilm formers hold a clump together
Silicone-free routinesno silicones appear in the list
Stretching wash daysnothing here needs a detergent to remove

Maybe skip if

this product has a scent
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
Picking it up locallywe’ve only seen it sold in one channel

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 Rich

Butters near the top: a heavy, softening formula.

Protein None

No protein or amino acids in the list.

Needs detergent to remove No

Nothing here needs a detergent wash to remove.

Fragrance Present

Fragrance is listed; it sits below the working ingredients.

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) solvent The base everything else is dissolved in Neutral
Erythritol humectant Pulls water into the hair Moisturizes
Behenyl Alcohol fatty alcohol Thickens and conditions (not a drying alcohol) Softens
Butyrospermum Parkii (Shea) ButterBUTYROSPERMUM PARKII (SHEA) BUTTER (BUTYROSPERMUM PARKII BUTTER) butter The heavy softener that makes it rich Heavy
1,2-Hexanediol preservative Keeps the product from spoiling Moisturizes
Caprylic/Capric Triglyceride light ester A light, silky feel Softens
Sodium Stearoyl Glutamate emulsifier Stabilises the mix Stabilizes
Benzoic Acid preservative Keeps the product from spoiling Stabilizes
Cananga Odorata Flower Oil botanical extract A trace plant extract Fragrance
FragranceFRAGRANCE (PARFUM) fragrance The scent Fragrance
What the list leaves out, and what it carriesNo sulfates, silicones, or drying alcohols. Protein-free: this is built for moisture rather than for strengthening. Contains fragrance. Contains heavier butters.
Full ingredient list (16)

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 ingredient

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

    • solvent
  • 2 Erythritol
    General function

    A small sugar alcohol that holds water. It draws moisture into the hair and gives a light cooling feel on the scalp, and it is used at low levels rather than as a main conditioner.

    Leading ingredient

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

    • humectant
  • 3 Behenyl Alcohol
    General function

    A long-chain fatty alcohol that gives rich conditioners their thickness and cushiony feel.

    Leading ingredient

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

    May suitDry, coarse, or high-porosity hair

    The waxy solid that gives a conditioner its body. It deposits a soft lubricating layer, which is most of what makes hair feel smooth after rinsing.

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

    Deposits with the cationic conditioners and helps them lie flat along the strand, which is where the detangling actually comes from.

    DependsFine or easily flattened hair

    Near the top of a conditioner it is doing most of the conditioning, and most of the weighting, at the same time.

    PubChem
    • fatty alcohol
    • emollient
    • thickener
  • 4 Butyrospermum Parkii (Shea) Butter · BUTYROSPERMUM PARKII (SHEA) BUTTER (BUTYROSPERMUM PARKII BUTTER)
    General function

    A rich, solid plant butter used for heavy conditioning on coarse or dry hair. High in the list it makes a product decidedly heavy.

    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

    Coarse, porous hair loses water quickly and can carry the weight; a butter slows that loss more than a thin oil does.

    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 solid fat melts onto the strand at body temperature and stays there, which is the heaviest surface moisture-holding a formula can offer.

    • butter
    • emollient
    • sealant
  • ▾Below about here, the order stops meaning much. These are usually used at 1% or less.
  • 5 1,2-Hexanediol
    General function

    A preservative booster that also holds a little moisture and helps other ingredients 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 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
    • preservative
    • humectant
    • solvent
  • 6 Caprylic/Capric Triglyceride
    General function

    A light, refined coconut-derived oil that spreads easily and does not go rancid. It gives slip without a heavy feel.

    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.

    • light ester
    • emollient
  • 7 Sodium Stearoyl Glutamate
    General function

    A mild emulsifier made from an amino acid and a fatty acid. It keeps oil and water together in creams and lotions.

    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.

    • emulsifier
  • 8 Benzoic Acid
    General function

    A food-grade preservative that only works in acidic formulas, which is why it usually appears next to citric acid.

    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.

    PubChem
    • preservative
  • 9 Cananga Odorata Flower Oil
    General function

    The essential oil of Cananga Odorata. Essential oils are aromatic — they are in the formula for scent, and they are a common source of declared fragrance allergens.

    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
  • 10 Ceramide NG
    General function

    A lipid of the kind that sits naturally between cuticle scales, added to help hold a damaged surface together.

    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

    Restoring surface lipids lowers friction between strands, which is where much of the roughness in damaged hair comes from.

    May suitProtein-sensitive hair

    A lipid, not a protein, despite sitting alongside proteins in most repair claims. It does not carry the stiffening effect.

    May suitVery dry or highly damaged hair

    Ceramides are the lipid class bleaching and heat deplete. Replacing them works on the surface layer rather than adding protein stiffness.

    PubChem
    • ceramide
    • emollient
  • 11 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
  • 12 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
  • 13 Hydrogenated Lecithin
    General function

    A stabilised lecithin used to help conditioning ingredients deposit 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 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
  • 14 OLEA EUROPAEA (OLIVE) FRUIT OIL (OLEA EUROPAEA FRUIT OIL)
  • 15 RICINUS COMMUNIS (CASTOR) SEED OIL (RICINUS COMMUNIS SEED OIL)
  • 16 Xanthan Gum
    General function

    A fermented sugar gum that thickens water-based formulas and adds soft, natural 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 suitCurls or waves needing flexible hold

    A polysaccharide film stays softer than a synthetic one as it dries, which is what leaves a curl defined but still able to move.

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

    A soft film binds neighbouring strands together, which is most of what helps flyaways lie down.

    May not suitMaximum-hold styling

    Gum films stay soft. A style that needs firm fixation usually wants a synthetic polymer doing the holding.

    • gum
    • thickener
    • film former

What the whole list adds up to

  • 5 emollients
  • 2 solvents
  • 2 humectants
  • 2 thickeners
  • 2 preservatives
  • 2 emulsifiers
  • 2 fragrances
  • 1 fatty alcohol
  • 1 butter
  • 1 sealant
  • 1 light ester
  • 1 botanical extract
  • 1 essential oil
  • 1 ceramide

Ingredient list captured 2026-10-07. Formulas change, so check the package in your hand when an ingredient matters to you.

Price · 3.38 oz

Seen at $38 1 store · checked Oct 8
Good value under $9 Under $2.79/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 $9 line; products that do this job typically go for about $14 at this size.

Sizes

1.35 oz
$16
$11.85/oz
3.38 ozusual store size
$38
$11.24/oz

The sizes cost about the same per ounce.

Show the price ladder
Where we’ve seen it3 listings · 3 stores

3.38 ozusual store sizeBest per ounce

1.35 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
  1. 3.38 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. Seen at $38 is the price we have observed for the 3.38 oz. We need three stores before we call a price commonly seen.
  3. Good value under $9 comes from the 8 products we score as doing the same job as this one. A quarter of them cost less than $2.79/oz; at 3.38 oz that is $9. 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 $14 is what those same products typically cost at this size: the midpoint of their prices per ounce, scaled to 3.38 oz.

Formula

Formula score
8 of 10

The formula carries what a leave-in is built around, and 6 products we score as close matches cost at least a quarter less per ounce. The difference is the label, not the formula.

How the score is counted
  • 6 products we score as doing the same job cost less per ounce
  • Costs more per ounce than 95% of the 749 leave-ins we’ve priced
  • Covers 5 of the 6 things a leave-in should do
  • Salon tier, sold at Brand website
  • 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.

KitschClosest function Moisturizing Argan Milk Leave-In Conditioner $2.21/oz $9.03/oz less
  • Protein-free
  • Curly method
  • Silicone-free
Function
  • Slip and detangling
Also
  • Sweet scent
  • Cruelty-free
  • Vegan
Compare
PhytoClose function INTENSE CURLS Definition Rich Cream $4.72/oz $6.52/oz less
  • Protein-free
  • Curly method
  • Rich
Function
  • Slip and detangling
  • Weight on the hair
Also
  • 8.4 oz bottle
  • Sold at specialty beauty counters
Compare
Design EssentialsLowest cost per oz African Chebe Anti-Breakage Moisturizing Leave-In Conditioner $1.17/oz $10.07/oz less
  • Protein-free
  • Curly method
  • Silicone-free
· Close function
Function
  • Slip and detangling
Also
  • Cruelty-free
  • Masstige tier
  • 12 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?

Good for the right person, not the lowest cost
Best user

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

Biggest tradeoff

Worth skipping for anyone sensitive to fragrance, soft, over-stretchy hair that needs protein, or hair that tangles the moment it is wet

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 4 of 10 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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