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Side by side

CHI Royal Treatment Hydrating Shampoo vs Nexxus Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid

93% function match · 11 of the 13 functions we compared match Formula overlap 55%. CHI Royal Treatment Hydrating Shampoo and Nexxus Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid share 4 ingredients among each other's most prominent.

Based on your consultation

Which of these fits your hair?

We check your pattern, moisture need, scalp, fragrance tolerance, weight sensitivity and more against each formula — and say which one lines up.

Your profile at a glance

  • Your answers appear here
  • Your answers appear here
  • Your answers appear here
  • Your answers appear here

When each one is the right call

What each formula is built for, from its own ingredient list.

  • Royal Treatment Hydrating Shampoo — colour-treated hair
  • Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid — colour-treated hair

Side by side

Every trait, aligned

One row per trait, read from each product’s own ingredient list and record. A dash means we have not researched that field for that product — it is not a “no”.

Trait
CHI Royal Treatment Hydrating Shampoo — 12 oz container CHI

Royal Treatment Hydrating Shampoo

  • Shampoo
  • Salon
  • Sulfate-free
  • Silicone-free
Nexxus Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid — 13.5 oz container Nexxus

Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid

  • Shampoo
  • Drugstore
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
$23.80 12 oz · $1.98/oz
$15.97 13.5 oz · $1.33/oz
Value / price positioning
Upper-mid price for a shampoo $$$$$ Salon tier · costs more than 62% of the 817 shampoos we’ve priced
Priced with its peers $$$$$ Drugstore tier · costs less than 54% of the 817 shampoos we’ve priced
Best for hair types
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
Moisture level Differs
Moderate Humectants in the working part of the formula. Your hair
High Humectants near the top — water-binding is a headline mechanism here. Your hair
Cleansing strength Same
Strong Removes oil, buildup, and most residue — a reset wash. Your hair
Strong Removes oil, buildup, and most residue — a reset wash. Your hair
Slip / detangling Same
Moderate Conditioning agents are present, lower in the list. Your hair
Moderate Conditioning agents are present, lower in the list. Your hair
Weight on hair
Light Water-first and light: unlikely to flatten fine hair. Your hair
Light Water-first and light: unlikely to flatten fine hair. Your hair
Fragrance
Present Fragrance is listed; it sits below the working ingredients. Your hair
Present Fragrance is listed; it sits below the working ingredients. Your hair
Protein Same
Prominent Protein high in the list — a strengthening formula, not a moisture one. Your hair
Prominent Protein high in the list — a strengthening formula, not a moisture one. Your hair
Silicone / wax buildup Same
None Nothing here needs a detergent wash to remove. Your hair
None Nothing here needs a detergent wash to remove. Your hair
Clarifying wash needed
Low Your hair
Low Your hair
Expected lather Same
High Thick foam that spreads quickly through the hair. Your hair
High Thick foam that spreads quickly through the hair. Your hair
Scalp active Same
None No over-the-counter scalp active. Your hair
None No over-the-counter scalp active. Your hair
Hard-water defence Same
Chelators present Chelators are present — they bind hard-water and pool minerals. Your hair
Chelators present Chelators are present — they bind hard-water and pool minerals. Your hair
Formula completeness
out of 10
Complete for its job
out of 10
Complete for its job
Who should choose this
  • Colour-treated hairthat fades faster in a sulfate wash
  • Fast-oiling scalpsthat need a real reset wash
  • Protein-hungry hairthat stretches and stays stretched when wet
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Colour-treated hairthat fades faster in a sulfate wash
  • Fast-oiling scalpsthat need a real reset wash
  • Protein-hungry hairthat stretches and stays stretched when wet
  • Curly-method routinesno sulfates and no water-insoluble silicones
Why you might skip it
  • Scents bother youthis product carries a scent
  • Protein-sensitive hairthat goes stiff or straw-like on protein
  • Dry or damaged haira strong detergent system strips as it cleans
  • Scents bother youthis product carries a scent
  • Protein-sensitive hairthat goes stiff or straw-like on protein
  • Dry or damaged haira strong detergent system strips as it cleans
from the formula stated by the brand reported by reviewers Scale: 1 dot low · 5 dots high, within this product type.
More facts about each one
Type
Shampoo
Shampoo
Where to buy
Brand website
Grocery / mass · Target
Free of
  • sulfate-free
  • silicone-free
  • curly-method compatible
  • sulfate-free
  • silicone-free
  • curly-method compatible
Vegan
Not vegan · ingredient list
Not vegan · ingredient list
Scent
Scented, not described
Scented, not described

Facts as we recorded them. A dash means we have not researched that field for that product — it is not a "no".

The bottom line

The bottom line depends on your hair

Which of these two suits you is a question about your hair, not about them. The consultation answers it — and tells you what your routine needs around it.

Take the consultation

$49.00 once, for your consultation and hair profile. No subscription, no required purchases.

The detail behind the table

Where the readings above come from: the ingredient lists themselves, each brand’s claims checked against them, what owners report, and cost per ounce in context.

Shared and distinct ingredients

Shared and distinct ingredients

Computed from the ingredient lists as printed. "Shared" means both lists carry it; where it sits on each label is stated, because position is what tells you how much.

What both formulas carry

IngredientRoyal Treatment Hydrating ShampooNexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid
Water
Neutral
#1Leading
#1Leading
Sodium C14-16 Olefin Sulfonate
Cleanses
#2Leading
#2Leading
Cocamidopropyl Betaine
Cleanses
#3Leading
#3Leading
Hydrolyzed Keratin
Protein
#13Below the 1% line
#7Below the 1% line
Fragrance
Fragrance
#34Below the 1% line
#10Below the 1% line

What only one of them carries

Royal Treatment Hydrating Shampoo

Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid

Full ingredient list — Royal Treatment Hydrating Shampoo (38)
Full ingredient list — Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid (23)

Claims check

What each brand says, against what each formula shows

Claims are quoted from each brand. We only mark one supported, partly supported, or conflicting when that product’s ingredient list actually speaks to it.

VerdictsRoyal Treatment Hydrating ShampooNexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid
Supported
1
2
Partly supported
1
0
Stated by brand
0
1
Potential conflict
0
0

Royal Treatment Hydrating Shampoo

  • Royal Treatment Hydrating is a hydrating system designed to combat dryness and revive dull, brittle hair.SupportedHelps hair feel hydrated.
  • Helps to smooth hair and control frizz, improving manageability, elasticity, and shine.Partly supportedA little slip, not a lot.

Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid

  • 3X weightless, healthy volume vs. untreated hairStated by brandOnly the brand’s testing shows this.
  • 48-hour gravity-defying volumeSupportedLeaves room for lift.
  • Sulfate- and silicone-freeSupportedNothing that needs a strong wash.

What owners say

What people report

Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings, and we never balance one product’s themes against another’s by inventing them.

Nexxus Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid draws complaints about dryness and hold.

Royal Treatment Hydrating Shampoo

Reviewers with fine, long, curly hair report reduced frizz even when air-drying only, no heat styling needed

senior reviewer with fine curly/long hair

Long-term repeat users report sustained hair health and reduced breakage with continued use

multi-year repeat purchaser, gift recipient turned loyal user

Used by some as a maintenance shampoo after color services and other at-home hair treatments

reviewer using product post-coloring

Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid

Reviewers with fine hair report the formula lifts roots and adds volume without weighing hair down

fine-hair reviewers

Several reviewers praise the scent and rich lather during washing

general users

A subset of reviewers report dryness or that hair fails to hold volume/style through the day despite the "48-hour" claim

general users

A notable gap between high star ratings and lower recommendation percentage suggests mixed satisfaction with real-world volumizing results despite generally positive scoring

general users

Price check

Cost per ounce, in context

Cost per ounce against every product of this type we have priced, each at the size it is most often sold in. Value labels are computed from that percentile and from how many products that do the same job cost less; they are comparisons, not judgements about a brand.

$1.33/oz vs $1.98/oz — CHI Royal Treatment Hydrating Shampoo costs about 1.5× more per ounce than Nexxus Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid.

$0.00/oz median $1.47/oz $17.29/oz $1.98/oz Royal Treatment Hydrating $1.33/oz Nexxus Hy-Volume Hair Sham

Every mark sits on one distribution because these are compared against the same set: 817 shampoos with a computable unit price.

Value readRoyal Treatment Hydrating ShampooNexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid
Label
Upper-mid price for a shampooSits in the middle of the range for shampoos per ounce.
Priced with its peersSits in the middle of the range for shampoos per ounce.

Computed from cost per ounce against every product of this type we have priced, and from how many products that do the same job cost less. It is a comparison, not a judgement about the brand.

Compare with something else

Close formulas to each of these, as their own comparison pages.

Royal Treatment Hydrating Shampoo vs Peppermint Tea Tree Clarifying ShampooEden BodyWorks · 96% function matchNexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid vs Peppermint Tea Tree Clarifying ShampooEden BodyWorks · 96% function matchRoyal Treatment Hydrating Shampoo vs Luxe Shine ShampooKenra Platinum · 95% function matchNexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid vs Luxe Shine ShampooKenra Platinum · 93% function matchRoyal Treatment Hydrating Shampoo vs Infra Moisture Therapy ShampooCHI · 94% function matchNexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid vs Hard Water Wellness ShampooMalibu C · 93% function matchRoyal Treatment Hydrating Shampoo vs Hair Restore Strength + Purity ShampooNeutrogena · 93% function matchNexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid vs Instantly Thick +Biotin Plump & Lift ShampooMarc Anthony · 93% function match

Royal Treatment Hydrating Shampoo · Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic Acid · All shampoos in the library

How this page was made

  • This page is assembled from the same researched records the individual product pages render: identity, each ingredient list as printed, each brand's own claims, dated price observations, and review themes written in our researchers' own words. Nothing on it is written per comparison.
  • We do not rank these against each other. Which of them suits you depends on your hair, and that is what the consultation works out.
  • The formula similarity percentage is a stored, precomputed number: position-weighted overlap of the two ingredient lists blended with agreement on the attributes we derive. It measures how alike two formulas are, not how well either works.
  • 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.
  • 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.
  • 9 sources were consulted across the products on this page.
  • Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice. We do not sell these products and take no placement fees.
  • This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.

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