Noticeable volume
It reads light on the strand, which is what volume claims depend on.
- Hydrolyzed Quinoa
Supported
Leaves room for lift.
Sizes & containers
9.3 fl oz · $32.30 at one store · UPC 810039251232
Rahua
Voluminous Shampoo
Shampoo / Clarifying, deep-cleaning
- Shampoo
- Sulfate-free
- Silicone-free
Size9.3 fl ozusual store size · 4 sizes
Price$32.30seen at one store · 9.3 oz
Price / oz$4.21/ozat 9.3 oz
Where to buy3 stores · $32.30–46.00
Add it to your products. We’ll tell you if it’s ever recalled.
Scent:
No added fragrance on the label, but it contains scenting botanicals. Essential oils have a smell even when they are not labelled as fragrance.
Manufacturer page: 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.
Factor
Your profile
Fit
Best for hair types
All types
Not in your profile
Moisture level
Moderate
Not in your profile
Cleansing strength
Strong
Not in your profile
Slip / detangling
Little
Not in your profile
Weight on hair
Light
Not in your profile
Fragrance
None listed
Not in your profile
Protein
Minor
Not in your profile
Silicone / wax buildup
None
Not in your profile
Clarifying wash needed
Low
Not in your profile
Sulfates
None listed
Not in your profile
Show all 22 factors we check
The rest of what your plan weighs on this product.
Parabens / preservatives
None of these listed
Not in your profile
Essential oils
Present
Not in your profile
Fast-drying alcohol
None
Not in your profile
Vegan / cruelty-free
Not yet verified
Not in your profile
Animal-derived ingredients
Not yet verified
Not in your profile
Heavy humectants
Not heavy
Not in your profile
Hard-water defence
None
Not in your profile
UV filter
None listed
Not in your profile
pH adjusted
Adjusted
Not in your profile
Ingredient list
20 ingredientsAbout average
Not in your profile
Price tier
Prestige
Not in your profile
Where to buy it
Brand websiteOne channel
Not in your profile
The consultation builds your hair profile, checks every factor in this table against it, and tells you where this product fits or what to use instead.
Start your consultation$49 once, with 60 days of follow-up questions and plan updates. Nothing renews, and you never have to buy a product.
Your avoid-list
Priced above most shampoos
$4.21/oz at 9.3 oz, more than 87% of the 1544 shampoos , which mostly run $0.79–3.04/oz.
Great for
no fragrance (parfum) on the label, but still scented
Colour-treated hairthat fades faster in a sulfate wash
Fast-oiling scalpsthat need a real reset wash
Dry, thirsty hairhumectants and emollients both sit up front
Curly-method routinesno sulfates and no water-insoluble silicones
Fine hairthat flattens under most products
Maybe skip if
this product has a scent
Dry or damaged haira strong detergent system strips as it cleans
Hard waterno chelator here to bind the minerals
Tight budgetsit sits in the upper price tiers
Picking it up locallywe’ve only seen it sold in one channel
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.
Cleansing strength
Strong
A reset wash that removes oil, buildup, and most residue.
Expected lather
High
Thick foam that spreads quickly through the hair.
Slip and detangling
Little
Nothing here is built to reduce combing force.
Water-binding (humectants)
Moderate
Humectants in the working part of the formula.
Scalp active
None
No over-the-counter scalp active.
Hard-water defence
None
No chelating agent in the list.
Needs detergent to remove
No
Nothing here needs a detergent wash to remove.
Protein
Minor
Protein appears, low enough to be a supporting ingredient.
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.
| Ingredient | What it does | Why it matters | Chip |
|---|---|---|---|
| WaterWater (Aqua) | solvent | The base everything else is dissolved in | Neutral |
| Sodium C14-16 Olefin Sulfonate | olefin sulfonate cleanser | — | Cleanses |
| Cocamidopropyl Betaine | amphoteric cleanser | — | Cleanses |
| Sodium Chloride | salt | Thickens the formula | Stabilizes |
| Cymbopogon Schoenanthus (Lemongrass) Extract | botanical extract | A plant extract, there as much for marketing as for function | Neutral |
| Camellia Sinensis (Green Tea) Leaf Extract | botanical extract | A trace plant extract | Stabilizes |
| Aloe Barbadensis Leaf Extract | botanical extract | A trace plant extract | Moisturizes |
| Oenocarpus Bataua (Ungurahua) Fruit Oil | oil | A small amount of oil for softness | Softens |
| Eucalyptus Globulus Leaf Oil | botanical extract | A trace plant extract | Fragrance |
| Lavandula Angustifolia (Lavender) Oil | botanical extract | A trace plant extract | Fragrance |
| Hydrolyzed Quinoa | film former | A supporting film former | Protein |
What the list leaves out, and what it carriesThe list carries no sulfates, silicones, or drying alcohols.
Full ingredient list (20)
In the US, ingredients above 1% are listed from most to least. Below 1% they can appear in any order. Each note keeps three things apart: what the ingredient generally does, its role in this type of product, and what its position can tell you.
-
1
Water
· Water (Aqua)
General function
The base of almost every rinse-off and cream hair product. It carries everything else and is normally the first ingredient on the label.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
- solvent
-
2
Sodium C14-16 Olefin Sulfonate
General function
A strong non-sulfate detergent used in "sulfate-free" shampoos. It cleans about as thoroughly as a sulfate despite the label difference.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
PubChemMay suitBuild-up-sensitive routinesA strong detergent with no sulfate on the label. It removes deposited films about as completely as a sulfate does.
May not suitVery dry or highly damaged hairSulfate-free on the label is a naming fact, not a mildness one: this is an efficient detergent, and hair short of moisture can feel it.
- olefin sulfonate cleanser
- cleanser
-
3
Cocamidopropyl Betaine
General function
A mild coconut-derived co-cleanser that boosts foam and softens the effect of stronger detergents. It appears in most shampoos, gentle or not.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
Indian Journal of DermatologyMay suitDry, coarse, or high-porosity hairMild cleansing leaves more surface lubrication in place on hair that dries out quickly.
May not suitBuild-up-sensitive routinesThe mildest detergents are also the least complete: a routine that deposits films needs something stronger periodically.
DependsVery dry or highly damaged hairAmong the mildest detergents in use — it is what baby shampoos are built on — but it is almost always the second detergent in a formula. How much a wash strips is still decided by the primary detergent listed above it.
- amphoteric cleanser
- secondary cleanser
- cleanser
-
4
Sodium Chloride
General function
Table salt. In shampoo it is used to thicken the liquid, not to treat the hair.
Supporting ingredientPubChemListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
- salt
- thickener
-
5
Cymbopogon Schoenanthus (Lemongrass) Extract
General function
An extract of Lemongrass (Cymbopogon Schoenanthus). Plant extracts are used across a wide range of levels, and label order is the best guide to how much is here.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
- botanical extract
- ▾Below about here, the order stops meaning much. These are usually used at 1% or less.
-
6
Camellia Sinensis (Green Tea) Leaf Extract
General function
Green tea extract, included for antioxidants and as a marketing-forward botanical.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
- botanical extract
- antioxidant
-
7
Aloe Barbadensis Leaf Extract
General function
A concentrated aloe extract used for light moisture and a soothing claim.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May suitFine or easily flattened hairHydration with no oil attached, so it adds very little weight even high on a list.
May suitVery dry or highly damaged hairAloe is mostly water carrying sugars that bind more of it, which is why it turns up as the base of moisture-first formulas.
DependsClimate-sensitive or frizz-prone hairA humectant follows the air: it holds water in humid conditions and can give it up in very dry ones. Climate decides what it does more than the label does.
- botanical extract
- humectant
-
8
Oenocarpus Bataua (Ungurahua) Fruit Oil
General function
A light Amazonian fruit oil used for shine and softness.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May suitDry, coarse, or high-porosity hairCoats 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 hairA thin oil layer lowers friction between strands and flattens the raised cuticle that scatters light and catches on its neighbours.
- oil
- emollient
-
9
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 zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May not suitFragrance-sensitive routinesEssential oils are fragrance. Several carry constituents on the EU list of declared fragrance allergens, so a label with no fragrance line can still be a scented product.
- botanical extract
- essential oil
- fragrance
-
10
Lavandula Angustifolia (Lavender) Oil
General function
Lavender essential oil, used for scent in aromatherapy-positioned products.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May not suitFragrance-sensitive routinesEssential oils are fragrance. Several carry constituents on the EU list of declared fragrance allergens, so a label with no fragrance line can still be a scented product.
- botanical extract
- essential oil
- fragrance
-
11
Rosmarinus Officinalis (Rosemary) Leaf Extract
- botanical extract
- antioxidant
-
12
Medicago Sativa (Alfalfa) Extract
- botanical extract
-
13
Saccharum Officinarum (Sugar Cane) Extract
- botanical extract
-
14
Hydrolyzed Quinoa
General function
A quinoa-derived protein used for light strengthening and colour retention claims.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May suitFrizz-prone, damaged, or high-friction hairFilling 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 stylingFilm 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 hairHydrolysed 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
-
15
Caprylic Acid
- preservative
- emulsifier
-
16
Glycerin
General function
Glycerin, also called glycerol, attracts moisture and mixes completely with water.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
Scientific ReportsMay suitDry, coarse, or high-porosity hairHigh-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.
May suitVery dry or highly damaged hairBinds water into the outer layers of the strand, and water is what makes dry hair flexible again rather than brittle.
DependsClimate-sensitive or frizz-prone hairWater moves both ways. Measured across concentrations, glycerin solutions give water up in some conditions and take it from the air in others. What it does for you depends on how much of it is there and on the air around it.
- humectant
-
17
Capryloyl Glycine
General function
An amino-acid derivative used to support the preservative system and, in scalp products, for a clarifying claim.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay suitBuild-up-sensitive routinesCleansing is what lifts deposited films off the strand. How completely depends on which detergent it is and how high on the list it sits.
DependsVery dry or highly damaged hairEvery detergent removes some sebum along with the product it is there to wash out. Which detergent it is matters more than that there is one.
- preservative
- cleanser
-
18
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 zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay suitFine or easily flattened hairIt hydrates without adding oil or a film, which is the combination fine hair usually needs.
May suitFrizz-prone, damaged, or high-friction hairDeposits a lubricating layer that makes combing easier, which is most of what stops mechanical damage adding to frizz.
May suitVery dry or highly damaged hairA humectant that also penetrates the cuticle, so it holds water inside the strand rather than only on the surface.
- humectant
- conditioning agent
- vitamin
-
19
Citric Acid
General function
Used to bring the product to a slightly acidic pH, which helps the cuticle lie flat. It is almost always near the end of the list.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
International Journal of TrichologyMay suitBuild-up-sensitive routinesHolds hard-water minerals in solution so they rinse away instead of depositing on the hair.
May suitFrizz-prone, damaged, or high-friction hairThe acid side of pH adjustment, and the reason it matters is measured: alkaline formulas raise the fibre's surface negative charge, increase friction between strands and lift the scales, while lower-pH ones do the reverse.
May suitGray, silver, or brass-prone hairWhere a warm cast comes from water minerals rather than from the hair itself, holding those metals in solution is what removes it.
- pH adjuster
- hard-water chelator
-
20
Potassium Sorbate
- preservative
What the whole list adds up to
- 8 botanical extracts
- 3 cleansers
- 3 humectants
- 3 preservatives
- 2 antioxidants
- 2 essential oils
- 2 fragrances
- 1 solvent
- 1 olefin sulfonate cleanser
- 1 amphoteric cleanser
- 1 secondary cleanser
- 1 salt
- 1 thickener
- 1 oil
Ingredient list captured 2026-08-22. Formulas change, so check the package in your hand when an ingredient matters to you.
Price · 9.3 oz
Seen at
$32.30
Good value under
$33
Priced above the products that do the same job. Stores sell it above the $33 line; products that do this job typically go for about $38 at this size.
Show the price ladder
Where we’ve seen it3 listings · 3 stores
-
Macy's
$32.309.3 oz · $3.47/ozAug 30Lowest per ozSale · was $38.00
-
Rahua (brand site)
$38.009.3 oz · $4.09/ozAug 22
-
Harrods
$46.009.3 oz · $4.95/ozOct 31
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
- 9.3 oz is the size stores list most often; every comparison on this page is made at it. Other sizes are shown in the Sizes row and the store list.
- Seen at $32.30 is the price we have observed for the 9.3 oz. We need three stores before we call a price commonly seen.
- Good value under $33 comes from the 8 products we score as doing the same job as this one. A quarter of them cost less than $3.59/oz; at 9.3 oz that is $33. Under that line you are paying less than most of them.
- About $38 is what those same products typically cost at this size: the midpoint of their prices per ounce, scaled to 9.3 oz.
Formula
8
Formula score
8 of 10
Above the range for shampoos per ounce for a complete formula, with no close, lower-priced match in our library.
How the score is counted
- 1 products that do the same job cost less per ounce
- Costs more per ounce than 87% of the 1544 shampoos we’ve priced
- Covers 6 of the 7 things a shampoo should do
- Reviewers mention 2 things they like about how it performs
- A working detergent systemWhat actually removes oil and product.3 pts
- Slip for detanglingReduces the force it takes to comb wet hair.2 pts
- A humectantBinds water into the hair.1 pt
- A hard-water chelatorBinds the minerals that dull hair in hard water.1 pt
- A pH adjusterBrings the formula to the acidic pH hair prefers.1 pt
- No detergent-dependent filmNothing that needs a clarifying wash to remove.1 pt
- Fragrance kept out of the top eightScent as a finishing touch, not a major share.1 pt
The formula score measures completeness for the job: a weighted share of the systems this product type is usually built around that we find in this list. It does not rate how well the product works or its quality, and it never compares across product types.
Does the same job, for less
Formulas that do the same things (cleanse, condition, coat or hold) for less per ounce. Scent, texture and where you buy them can still differ.
Mane 'n TailLowest cost per oz
Moisture Balance Shampoo
$0.53/oz $3.68/oz less
- Sulfate-free
- Deep clean
- Curly method
- Function
- Also
See more alternatives in the product library
These products do a similar job. We haven’t matched them to you. Find the one that fits your hair, routine and budget
Final decision
Should you buy it?
An above-range pick for the hair it suitsBest user
People sensitive to fragrance, for a formula with no added fragrance and washing without sulfates
Biggest tradeoff
Not ideal for anyone sensitive to fragrance, dry or damaged hair, or hard water without a chelating wash
Best alternative if not
Mane 'n Tail Moisture Balance Shampoo 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
Effective cleansing without stripping natural oils
This is a marketing claim; an ingredient list cannot speak to it.
—
Stated by brand
Can’t be confirmed from label.
Regulates oil production
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.
Fine-haired reviewers say it adds noticeable volume and lift while leaving hair soft, not stripped
fine/thin hairOily-scalp reviewers report it keeps hair feeling fresh and less greasy through the next day
oily scalpAt least one reviewer with very fine, post-menopausal hair found it drying and lacking body
fine, post-menopausal hairSome price-sensitive first-time buyers say the higher cost surprised them but felt justified by results
value-conscious, first purchaseMore 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 (4 manufacturer or regulatory, 0 retailer, 0 editorial), last checked 2026-08-25.
- Ingredient references are linked for 6 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 2026-08-25.
