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Side by side

CHI BioSilk Silk Therapy Shampoo vs CHI Royal Treatment Scalp Care Biotin Shampoo

85% function match · 10 of the 13 functions we compared match Formula overlap 61%. CHI BioSilk Silk Therapy Shampoo and CHI Royal Treatment Scalp Care Biotin Shampoo 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.

  • BioSilk Silk Therapy Shampoo — colour-treated hair
  • Royal Treatment Scalp Care Biotin Shampoo — 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

BioSilk Silk Therapy Shampoo

  • Shampoo
  • Salon
  • Sulfate-free
  • Silicone-free
CHI Royal Treatment Scalp Care Biotin Shampoo — 12 oz container CHI

Royal Treatment Scalp Care Biotin Shampoo

  • Shampoo
  • Salon
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
$20 12 oz · $1.69/oz
$36 12 oz · $3.00/oz
Value / price positioning
Upper-mid price for a shampoo $$$$$ Salon tier · costs more than 56% of the 817 shampoos we’ve priced
Same job for less elsewhere $$$$$ Salon tier · costs more than 75% 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 Same
High Humectants near the top — water-binding is a headline mechanism here. 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 Differs
High Conditioning agents sit high in the list — this is a detangling formula. 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
Medium Middle of the range — noticeable on fine hair, light on coarse 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 Differs
Prominent Protein high in the list — a strengthening formula, not a moisture one. Your hair
Minor Protein appears, low enough to be a supporting ingredient. 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
  • Maximum slipfor hair that tangles the moment it is wet
  • 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
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
  • Dry or damaged haira strong detergent system strips as it cleans
  • Dry or very humid airwhere heavy humectants work against you
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
Brand website
Free of
  • sulfate-free
  • silicone-free
  • curly-method compatible
  • sulfate-free
  • silicone-free
  • curly-method compatible
Vegan
Not vegan · ingredient list
—
Scent
Scented, not described
Mint & herbal · Fresh & airy

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

IngredientBioSilk Silk Therapy ShampooRoyal Treatment Scalp Care Biotin Shampoo
Water
Neutral
#1Leading
#1Leading
Sodium C14-16 Olefin Sulfonate
Cleanses
#2Leading
#2Leading
Cocamidopropyl Betaine
Cleanses
#3Leading
#3Leading
Caprylyl Glycol
Moisturizes
#4Below the 1% line
#8Below the 1% line
Hydrolyzed Silk
Protein
#5Below the 1% line
#15Below the 1% line
Panthenol
Detangles
#6Below the 1% line
#22Below the 1% line
Fragrance
Fragrance
#24Below the 1% line
#40Below the 1% line
Benzyl Benzoate
Fragrance
#26Below the 1% line
#41Below the 1% line

What only one of them carries

BioSilk Silk Therapy Shampoo

Royal Treatment Scalp Care Biotin Shampoo

Full ingredient list — BioSilk Silk Therapy Shampoo (30)
Full ingredient list — Royal Treatment Scalp Care Biotin Shampoo (43)

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.

VerdictsBioSilk Silk Therapy ShampooRoyal Treatment Scalp Care Biotin Shampoo
Supported
1
1
Partly supported
0
0
Stated by brand
2
1
Potential conflict
0
0

BioSilk Silk Therapy Shampoo

  • Ideal for all hair typesStated by brandSee the fit panel instead.
  • Leaves hair healthy and manageableSupportedEasier detangling, less breakage.
  • Silk proteins penetrate hair to condition and create incredible shineStated by brandCan’t be confirmed from label.

Royal Treatment Scalp Care Biotin Shampoo

  • This invigorating shampoo helps to reset and balance scalp wellness by combatting dryness and flaking.Stated by brandSoothing, not an active treatment.
  • The gentle formula purifies and exfoliates to calm the scalp and balance moisture levels.SupportedResets a coated scalp.

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.

Both praised for the scent.

BioSilk Silk Therapy Shampoo

Long-time repeat buyers say a little goes a long way, product lasts longer than expected

multiple long-term users, including gift purchasers

Reviewers who use it as part of the full BioSilk Silk Therapy line (with conditioner/other products) report the best combined results

users who pair with companion Silk Therapy products

Reviewers with fine, curly, or tangle-prone hair report reduced frizz and easier detangling

fine/naturally curly, waist-length hair reviewer noted specifically

Fragrance is frequently singled out as a standout positive

general reviewer base

Royal Treatment Scalp Care Biotin Shampoo

Leaves hair feeling notably soft when used with the matching Royal Treatment Scalp Care Biotin Conditioner

single reviewer, paired with conditioner

Good lather and pleasant smell reported by an exact-product reviewer

Kosmetolog exact 355 ml product review

Cleansing, stronger roots, and less breakage reported after use

Kosmetolog exact 355 ml product review

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.

$1.69/oz vs $3.00/oz — CHI Royal Treatment Scalp Care Biotin Shampoo costs about 1.8× more per ounce than CHI BioSilk Silk Therapy Shampoo.

$0.00/oz median $1.47/oz $17.29/oz $1.69/oz BioSilk Silk Therapy Shamp $3.00/oz Royal Treatment Scalp Care

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

Value readBioSilk Silk Therapy ShampooRoyal Treatment Scalp Care Biotin Shampoo
Label
Upper-mid price for a shampooSits in the middle of the range for shampoos per ounce.
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.

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.

BioSilk Silk Therapy Shampoo vs Infra Moisture Therapy ShampooCHI · 93% function matchRoyal Treatment Scalp Care Biotin Shampoo vs Royal Treatment Color Gloss Protecting ShampooCHI · 100% function matchBioSilk Silk Therapy Shampoo vs Nexxus Hy-Volume Hair Shampoo with Collagen Protein & Hyaluronic AcidNexxus · 93% function matchRoyal Treatment Scalp Care Biotin Shampoo vs BioSilk Color Therapy ShampooCHI · 100% function matchBioSilk Silk Therapy Shampoo vs Peppermint Tea Tree Clarifying ShampooEden BodyWorks · 89% function matchRoyal Treatment Scalp Care Biotin Shampoo vs Kristin Ess+ Peptide Boost Volumizing ShampooKristin Ess · 100% function matchBioSilk Silk Therapy Shampoo vs Royal Treatment Hydrating ShampooCHI · 89% function matchRoyal Treatment Scalp Care Biotin Shampoo vs Hard Water Wellness ShampooMalibu C · 98% function match

BioSilk Silk Therapy Shampoo · Royal Treatment Scalp Care Biotin Shampoo · 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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