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Mielle

Rosemary Mint Strengthening Leave-In Conditioner

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

  • Leave-in
  • lotion
  • Detangler
  • Sulfate-free
  • Silicone-free
  • Protein-free
Size3.2 fl ozmost listed · 2 sizes
Price$4.49seen at one store · 3.2 oz · from $0.75/oz in the 12 oz
Price / oz$1.79/ozat 3.2 oz
Where to buy5 stores · 2 sizes

Scent:

Notes: floral, herbal, mint.

Manufacturer page: mielleorganics.com

Personal fit

Is this right for you?

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Priced with its peers

$1.79/oz at 3.2 oz — less than 56% of the 481 leave-ins , which mostly run $1.17–5.55/oz. The cost less.

Price and stores

Great for

Protein-sensitive hairthat stiffens when protein is added
Maximum slipfor hair that tangles the moment it is wet
Dry, thirsty hairhumectants and emollients both sit up front
Curly-method routinesno sulfates and no water-insoluble silicones
Silicone-free routinesno silicones appear in the list
Stretching wash daysnothing here needs a detergent to remove

Maybe skip if

this product carries a scent
Hair that needs proteinthere is none in this list
Dry or very humid airwhere heavy humectants work against you

Whether this weight sits well on your hair depends on density, porosity, and how much you already layer — 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.

Weight on the hair Medium

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

Slip and detangling High

Conditioning agents sit high in the list — this is a detangling formula.

Water-binding (humectants) High

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

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 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. These 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
Water solvent The base everything else is dissolved in Neutral
Glycerin humectant Pulls water into the hair Moisturizes
Behentrimonium Methosulfate conditioning agent Conditions and softens — this is what makes it comb through Detangles
Cetearyl Alcohol fatty alcohol Thickens and conditions — not a drying alcohol Softens
Stearyl Alcohol fatty alcohol Thickens and conditions — not a drying alcohol Softens
Prunus Amygdalus Dulcis (Sweet Almond) Oil oil Coats and softens the strand Softens
Cetyl Alcohol fatty alcohol Thickens and conditions — not a drying alcohol Softens
Triethyl Citrate pH adjuster Fine-tunes the pH pH balancer
Fragrance fragrance The scent Fragrance
Rosmarinus Officinalis (Rosemary) Leaf Oil botanical extract A trace plant extract Fragrance
Zingiber Officinale (Ginger) Root Oil fragrance The scent Fragrance
Mentha Piperita (Peppermint) Oil botanical extract A trace plant extract 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.
Full ingredient list (27)

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
    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 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.

    Leading ingredient

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

    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
  • 3 Behentrimonium Methosulfate
    General function

    A mild cationic conditioner known for heavy detangling with a light rinse-out feel. Common in curly-hair conditioners.

    Leading ingredient

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

    May suitDry, coarse, or high-porosity hair

    A C22 conditioning quat, the chain length that deposits most heavily in electrokinetic testing. It is the slip coarse or porous hair usually needs, delivered by chain length rather than by charge alone.

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

    A cationic conditioning agent: it binds to the damaged, negatively charged parts of the cuticle and lowers combing friction there.

    May suitVery dry or highly damaged hair

    The class that does the detangling in a conditioner. It deposits lubrication where the cuticle is worn.

    International Journal of Cosmetic Science
    • conditioning agent
    • emulsifier
  • 4 Cetearyl Alcohol
    General function

    A waxy fatty alcohol - nothing like drying alcohol. It gives conditioners their body and leaves a soft, smoothing film on the 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

    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
  • 5 Stearyl Alcohol
    General function

    A fatty alcohol that thickens conditioners and helps them coat the hair evenly.

    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

    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
  • 6 Prunus Amygdalus Dulcis (Sweet Almond) Oil
    General function

    A medium-weight oil used for softness and slip.

    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
  • 7 Cetyl Alcohol
    General function

    A fatty alcohol used to thicken creams and add slip. It softens rather than dries.

    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

    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
  • Below about this point, order stops being meaningful — these are typically used at 1% or less.
  • 8 Triethyl Citrate
    General function

    A citrate ester used to stabilise fragrance and support the preservative system.

    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

    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.

    PubChem
    • pH adjuster
    • preservative
  • 9 Olea Europaea (Olive) Fruit Oil
    General function

    A heavy, coating oil traditionally used for deep conditioning.

    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

    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.

    • oil
    • emollient
  • 10 Fragrance
    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
  • 11 Biotin
    • vitamin
  • 12 Persea Gratissima (Avocado) Oil
    General function

    A rich oil used in masks and heavier creams for softness on coarse or dry hair.

    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

    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.

    • oil
    • emollient
  • 13 Sesamum Indicum (Sesame) Seed Oil
    General function

    A medium-weight oil used for conditioning and scalp application.

    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

    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.

    • oil
    • emollient
  • 14 Ceteareth-20
    • emulsifier
  • 15 Rosmarinus Officinalis (Rosemary) Leaf Oil
    General function

    Rosemary essential oil, used for scent and its traditional scalp reputation.

    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
  • 16 Zingiber Officinale (Ginger) Root Oil
    General function

    The essential oil of Ginger (Zingiber Officinale). 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

    Declared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.

    • fragrance
    • botanical extract
  • 17 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
  • 18 Propylene Glycol
    General function

    A small humectant and solvent that keeps formulas stable and helps active ingredients spread.

    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
  • 19 Chamomilla Recutita (Matricaria) Flower Extract
    • botanical extract
  • 20 Vaccinium Myrtillus Fruit/Leaf Extract
    • botanical extract
  • 21 Saccharum Officinarum (Sugar Cane) Extract
    • botanical extract
  • 22 Citrus Aurantium Dulcis (Orange) Fruit Extract
    • botanical extract
  • 23 Citrus Limon (Lemon) Fruit Extract
    • botanical extract
  • 24 Acer Saccharum (Sugar Maple) Extract
    • botanical extract
  • 25 Phenoxyethanol
    • preservative
  • 26 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
  • 27 Polysorbate 20
    • solubilizer
    • emulsifier

What the whole list adds up to

  • 9 botanical extracts
  • 7 emollients
  • 4 oils
  • 4 fragrances
  • 3 humectants
  • 3 emulsifiers
  • 3 fatty alcohols
  • 3 thickeners
  • 3 preservatives
  • 2 solvents
  • 2 essential oils
  • 1 conditioning agent
  • 1 pH adjuster
  • 1 declared fragrance

Ingredient list captured 2026-08-23. Formulas change — check the package in your hand when an ingredient matters to you.

Price · 3.2 oz

Seen at $4.49 lowest of 2 stores · checked Aug 30
Good value under $4 Under $1.13/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 $4 line; products that do this job typically go for about $5 at this size.

Sizes

3.2 ozmost listed
$4.49
$1.79/oz
12 oz
$8.99
$0.75/oz

The 12 oz costs 58% less per ounce than the 3.2 oz.

Show the price ladder
Where we’ve seen it5 listings · 5 stores

3.2 ozmost listed

12 oz

  • Target
    $8.99
    12 oz · $0.75/oz
    Aug 23Lowest per oz

32 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. 3.2 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.
  2. Seen at $4.49 is the price we have observed for the 3.2 oz. We need three stores before we call a price commonly seen.
  3. Good value under $4 comes from the 8 products we score as doing the same job as this one. A quarter of them cost less than $1.13/oz; at 3.2 oz that is $4. 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 $5 is what those same products typically cost at this size — the midpoint of their prices per ounce, scaled to 3.2 oz.

Formula

Formula score
10 of 10

The formula carries the systems a leave-in is built around, and it sits in the middle of the range for leave-ins per ounce.

How the score is counted
  • 3 products we score as doing the same job cost less per ounce
  • Costs less per ounce than 56% of the 481 leave-ins we’ve priced
  • Covers 6 of the 6 things a leave-in should do
  • 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 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, for less

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.

MielleSame function Pomegranate & Honey Leave-In Conditioner $1.17/oz $0.62/oz less
  • Protein-free
  • Curly method
  • Silicone-free
Differs
  • Citrus scent, not mint
  • 12 oz bottle
Compare
Taliah WaajidLowest cost per oz Easy Herbal Comb Out Conditioner $0.93/oz $0.86/oz less
  • Protein-free
  • Curly method
  • Silicone-free
· Same function
Differs
  • 8 oz bottle
Compare
Taliah WaajidClose function Curls, Waves & Naturals The Great Detangler $0.99/oz $0.80/oz less
  • Curly method
  • Silicone-free
  • Rinses clean
Function
  • Protein
Also
  • Sweet scent, not mint
  • 8 oz bottle
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

Suits every hair pattern

Final decision

Should you buy it?

A solid pick for the hair it suits
Best user

Hair that stiffens on protein — for a protein-free formula and real detangling slip

Biggest tradeoff

Not ideal 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.

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.

3
SupportedBacked by ingredients
0
Partly supportedSome supporting logic
0
Stated by brandNo clear evidence
0
Potential conflictFormula works against claim
Infused with Biotin, Rosemary, and other nourishing oils, this lightweight formula hydrates

Humectants or rich emollients sit in the first eight ingredients.

  • Glycerin
  • Cetearyl Alcohol
  • Stearyl Alcohol
Supported

Helps hair feel hydrated.

Locks in moisture, and strengthens brittle strands from root to tip

Humectants or rich emollients sit in the first eight ingredients.

  • Glycerin
  • Cetearyl Alcohol
  • Stearyl Alcohol
Supported

Helps hair feel hydrated.

Formulated without parabens, sulfates, paraffins, mineral oil, or DEA

No sulfate detergents appear in the ingredient list.

Supported

Gentler on colour and coils.

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.

Pleasant scent, hair feels strengthened and moisturized

Transforms curls -- reduces frizz, improves definition and shine

curly hair

One report of the product making the scalp very oily

More from Mielle

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 (3 manufacturer or regulatory, 1 retailer, 0 editorial), last checked 2026-08-25.
  • Ingredient references are linked for 8 of 16 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 2026-08-25.