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Rahua

Omega 9 Hair Mask

Mask / Deep treatment, oil-rich

  • Mask / treatment
  • Sulfate-free
  • Silicone-free
Size4 fl ozusual store size · 2 sizes
Price$57seen at one store · 4 oz
Price / oz$14.29/ozat 4 oz
Where to buy2 stores · $44.00–57.00

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

Scent:

Notes: eucalyptus, lavender.

“Lavender & Eucalyptus natural notes” (Brand page)

Manufacturer page: rahua.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 22 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

$14.29/oz at 4 oz, more than 98% of the 576 masks and treatments , which mostly run $1.80–5.62/oz.

View alternatives

Great for

no fragrance (parfum) on the label, but still scented
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
Coarse or dry hairthat absorbs everything you give it
Silicone-free routinesno silicones appear in the list

Maybe skip if

this product has a scent
Oily scalp or fine hairthat gets weighed down
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 your hair needs moisture, protein or bond repair right now depends on its damage history and how it behaves wet. The consultation finds out which.

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.

Oils and butters Present, high in the list

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

Weight on the hair Rich

Heavy butters and waxes in the first eight ingredients.

Protein Minor

Protein appears, low enough to be a supporting ingredient.

Water-binding (humectants) Moderate

Humectants in the working part of the formula.

Slip and detangling High

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

Needs detergent to remove No

Nothing here needs a detergent wash to remove.

Fragrance None listed

No fragrance is listed.

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
WaterAqua solvent The base everything else is dissolved in Neutral
Helianthus Annuus (Sunflower) Seed OilOrganic Helianthus Annuus (Sunflower) Seed Oil oil Coats and softens the strand Softens
Brassica Campestris (Rapeseed) Seed OilCanola Oil oil Coats and softens the strand Softens
Behentrimonium MethosulfateBehentrimonium Methosulfate (Colza Oil) conditioning agent Conditions and softens so hair combs through Detangles
Glyceryl Stearate emulsifier Keeps oil and water mixed Softens
Glycerin humectant Pulls water into the hair Moisturizes
Oenocarpus Bataua (Rahua, Ungurahua) Oil oil Coats and softens the strand Softens
Stearalkonium Chloride conditioning agent Conditions and softens so hair combs through Detangles
Hydrolyzed QuinoaOrganic Hydrolyzed Quinoa film former A supporting film former Protein
Lavandula Angustifolia (Lavender) Oil botanical extract A trace plant extract Fragrance
Eucalyptus Globulus Leaf Oil botanical extract A trace plant extract Fragrance
What the list leaves out, and what it carriesThe list carries no sulfates, silicones, or drying alcohols. Heavier butters sit in the working part of the list.
Full ingredient list (15)

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 · 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 Helianthus Annuus (Sunflower) Seed Oil · Organic Helianthus Annuus (Sunflower) Seed Oil
    General function

    A light, widely used oil that softens without much weight.

    Leading ingredient

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

    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.

    International Journal of Trichology
    • oil
    • emollient
  • 3 Brassica Campestris (Rapeseed) Seed Oil · Canola Oil
    General function

    A light, inexpensive plant oil used as a base emollient.

    Leading ingredient

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

    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
  • 4 Behentrimonium Methosulfate · Behentrimonium Methosulfate (Colza Oil)
    General function

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

    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

    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
  • 5 Glyceryl Stearate
    General function

    A workhorse emulsifier that holds oil and water together in a cream.

    Supporting ingredient

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

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

    Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.

    PubChem
    • emulsifier
    • emollient
  • 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 Oenocarpus Bataua (Rahua, Ungurahua) Oil
    General function

    The oil pressed from Rahua, Ungurahua (Oenocarpus Bataua). 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.

    • oil
    • emollient
  • 8 Stearalkonium Chloride
    General function

    A long-standing conditioning agent that flattens the cuticle and cuts static. It rinses less completely than newer alternatives.

    Supporting ingredient

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

    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.

    DependsBuild-up-sensitive routines

    Substantive by design. A routine with no detergent wash gives it nothing to leave with.

    PubChem
    • conditioning agent
  • 9 Organic Butyrospermum Parkii (Shea Butter)
  • 10 Hydrolyzed Quinoa · Organic Hydrolyzed Quinoa
    General function

    A quinoa-derived protein used for light strengthening and colour retention claims.

    Secondary ingredient

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

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

    Filling surface gaps evens out the cuticle, which is part of what makes damaged hair comb and reflect light more like undamaged hair.

    May suitMaximum-hold styling

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

    May suitVery dry or highly damaged hair

    Hydrolysed fragments are small enough to sit in the gaps of a worn cuticle for a wash or two, temporarily restoring stiffness and cutting breakage in combing.

    • film former
    • protein
    • hydrolysed protein
  • 11 Glycine
    General function

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

    Secondary ingredient

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

    May suitVery dry or highly damaged hair

    Amino acids are the smallest protein fraction and bind water as well, so they add far less stiffness than a hydrolysed protein does.

    DependsProtein-sensitive hair

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

    PubChem
    • amino acid
  • ▾Below about here, the order stops meaning much. These are usually used at 1% or less.
  • 12 Lavandula Angustifolia (Lavender) Oil
    General function

    Lavender essential oil, used for scent in aromatherapy-positioned products.

    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
  • 13 Eucalyptus Globulus Leaf Oil
    General function

    The essential oil of Eucalyptus Globulus. 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
  • 14 Panthenol
    General function

    Provitamin B5. It draws in water and penetrates the strand a little, which is why it is the standard ingredient for softness and shine claims.

    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

    It hydrates without adding oil or a film, which is the combination fine hair usually needs.

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

    Deposits a lubricating layer that makes combing easier, which is most of what stops mechanical damage adding to frizz.

    May suitVery dry or highly damaged hair

    A humectant that also penetrates the cuticle, so it holds water inside the strand rather than only on the surface.

    PubChem
    • humectant
    • conditioning agent
    • vitamin
  • 15 Potassium Sorbate
    • preservative

What the whole list adds up to

  • 4 emollients
  • 3 oils
  • 2 conditioning agents
  • 2 emulsifiers
  • 2 humectants
  • 2 botanical extracts
  • 2 essential oils
  • 2 fragrances
  • 1 solvent
  • 1 film former
  • 1 protein
  • 1 hydrolysed protein
  • 1 amino acid
  • 1 conditioning agent

Ingredient list captured 2026-09-14. Formulas change, so check the package in your hand when an ingredient matters to you.

Price · 4 oz

Seen at $57 1 store · checked Sep 15
Good value under $9 Under $2.23/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 $17 at this size.

Show the price ladder
Where we’ve seen it2 listings · 2 stores

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. 4 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 $57 is the price we have observed for the 4 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 $2.23/oz; at 4 oz that is $9. Under that line you are paying less than most of them.
  4. About $17 is what those same products typically cost at this size: the midpoint of their prices per ounce, scaled to 4 oz.

Formula

Formula score
9 of 10

This is a complete treatment formula. It is also above the range for masks and treatments per ounce, with 6 close matches selling for meaningfully less.

How the score is counted
  • 6 products that do the same job cost less per ounce
  • Costs more per ounce than 98% of the 576 masks and treatments we’ve priced
  • Covers 5 of the 6 things a treatment should do
  • Salon tier, sold at Brand website
  • Rich emollientsThe depth a treatment step is built around.3 pts
  • Conditioning agents up frontWhat makes wet hair comb through.2 pts
  • Protein or amino acidsThe strengthening side of a treatment.2 pts
  • A humectantBinds water into the hair.1 pt
  • A stated dwell timeThe brand says how long to leave it on.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.

KerastaseSame function Resistance Masque Therapiste $10.06/oz $4.23/oz less
  • Curly method
  • Rich
  • Silicone-free
Differs
  • Prestige tier
  • 6.8 oz bottle
Compare
Kinky-CurlyLowest cost per oz Stellar Strands $1.63/oz $12.66/oz less
  • Curly method
  • Silicone-free
  • Alcohol-free
· Close function
Function
  • Weight on the hair
Also
  • Cruelty-free
  • Masstige tier
  • 8 oz bottle
Compare
Camille RoseClose function Strength Restorative Deep Conditioner $1.93/oz $12.36/oz less
  • Rich
  • Budget
Function
  • Oils and butters
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

Built for curly to coily hair

Final decision

Should you buy it?

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

People sensitive to fragrance, looking for a formula with no added fragrance and real detangling slip

Biggest tradeoff

Worth skipping for anyone sensitive to fragrance, oily scalps and fine hair, or very dry or very humid climates

Best alternative if not

Kerastase Resistance Masque Therapiste, for similar results at a lower price

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

Claims check

What the brand says, and what the formula shows

Claims are quoted from the brand. We mark a claim supported, partly supported or conflicting only when the ingredient list speaks to it. Everything else stays "stated by the brand". That isn’t a criticism: most claims can’t be checked from a label.

1
SupportedBacked by ingredients
0
Partly supportedSome supporting logic
2
Stated by brandNo clear evidence
0
Potential conflictFormula works against claim
Intensive treatment for fine to medium hair

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

—

Stated by brand

Can’t be confirmed from label.

Repairs damage and restores moisture

Humectants or rich emollients sit in the first eight ingredients.

  • Helianthus Annuus (Sunflower) Seed Oil
  • Brassica Campestris (Rapeseed) Seed Oil
  • Glyceryl Stearate
Supported

Helps hair feel hydrated.

Concentrated plant nutrients penetrate the hair shaft

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

—

Stated by brand

Can’t be confirmed from label.

How to read this

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

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 with fine or thin hair say it adds softness and silkiness without weighing hair down.

Multiple reviewers report a stylist or they themselves noticed improved hair health after repeated use, especially on ends damaged by coloring or bleaching.

Reviewers with dry, damaged, or color/sun-stressed hair repeatedly report noticeably better hydration and shine.

Several reviewers describe the scent as pleasant and not overpowering.

More from Rahua

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.
  • 4 sources consulted for this product (0 manufacturer or regulatory, 1 retailer, 3 editorial), last checked 2026-09-15.
  • Ingredient references are linked for 7 of 11 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 2026-09-15.

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