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Side by side

OGX ProGrowth + Peptide Clarifying Hair Shampoo vs OGX Thick & Full+ Biotin & Collagen Shampoo for Thin Hair

59% function match · 8 of the 13 functions we compared match Formula overlap 35%. OGX ProGrowth + Peptide Clarifying Hair Shampoo and OGX Thick & Full+ Biotin & Collagen Shampoo for Thin Hair share 2 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.

  • ProGrowth + Peptide Clarifying Hair Shampoo — colour-treated hair
  • Thick & Full+ Biotin & Collagen Shampoo for Thin Hair — 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
OGX ProGrowth + Peptide Clarifying Hair Shampoo — 13 oz container OGX

ProGrowth + Peptide Clarifying Hair Shampoo

  • Shampoo
  • Drugstore
  • Sulfate-free
  • Silicone-free
OGX Thick & Full+ Biotin & Collagen Shampoo for Thin Hair — 13 oz container OGX

Thick & Full+ Biotin & Collagen Shampoo for Thin Hair

  • Shampoo
  • Drugstore
  • Sulfate-free
Price, size & price per ounce
$28.99 13.02 oz · $2.23/oz
$6.97 13 oz · $0.54/oz
Value / price positioning
Upper-mid price for a shampoo $$$$$ Drugstore tier · costs more than 65% of the 817 shampoos we’ve priced
Lower cost than most shampoos $$$$$ Drugstore tier · costs less than 88% 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
None found No humectants found — nothing here pulls water into the hair. 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
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
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. 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 Differs
None Nothing here needs a detergent wash to remove. Your hair
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
Clarifying wash needed
Low Your hair
Moderate 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
None No chelating agent in the list. Your hair
None No chelating agent in the list. Your hair
Formula completeness
out of 10
Complete for its job
out of 10
Covers the core
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
  • Very dry hairno fast-drying alcohol in the list
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 light scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Protein-sensitive hairthat goes stiff or straw-like on protein
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
Line
ProGrowth + Peptide
Thick & Full+ Biotin & Collagen
Where to buy
Target · Grocery / mass
Target
Free of
  • sulfate-free
  • silicone-free
  • curly-method compatible
  • sulfate-free
Vegan
—
Not vegan · ingredient list
Cruelty-free
Not cruelty-free · PETA-listed
Not cruelty-free · PETA-listed
Scent
Scented, not described
Fresh & airyLight

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

IngredientProGrowth + Peptide Clarifying Hair ShampooThick & Full+ Biotin & Collagen Shampoo for Thin Hair
Water
Neutral
#1Leading
#1Leading
Sodium C14-16 Olefin Sulfonate
Cleanses
#2Leading
#2Leading
Cocamidopropyl Betaine
Cleanses
#3Leading
#15Below the 1% line
Fragrance
Fragrance
#16Below the 1% line
#7Below the 1% line

What only one of them carries

ProGrowth + Peptide Clarifying Hair Shampoo

Thick & Full+ Biotin & Collagen Shampoo for Thin Hair

Full ingredient list — ProGrowth + Peptide Clarifying Hair Shampoo (19)
Full ingredient list — Thick & Full+ Biotin & Collagen Shampoo for Thin Hair (21)

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.

VerdictsProGrowth + Peptide Clarifying Hair ShampooThick & Full+ Biotin & Collagen Shampoo for Thin Hair
Supported
0
1
Partly supported
0
1
Stated by brand
3
1
Potential conflict
0
0

ProGrowth + Peptide Clarifying Hair Shampoo

  • Removes up to 98% of buildupStated by brandOnly the brand’s testing shows this.
  • Developed with trichologistsStated by brandCan’t be confirmed from label.
  • Contains 1.5% mandelic acid scalp exfoliantStated by brandOnly the brand’s testing shows this.

Thick & Full+ Biotin & Collagen Shampoo for Thin Hair

  • 72+ hours of volume & bodyPartly supportedNeutral on lift.
  • 2x more protein & lipid protection via LipiPro Shield TechnologyStated by brandOnly the brand’s testing shows this.
  • Sulfate-free, paraben-free formulationSupportedGentler on colour and coils.

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. OGX ProGrowth + Peptide Clarifying Hair Shampoo draws complaints about residue or cast and irritation.

ProGrowth + Peptide Clarifying Hair Shampoo

Reviewers with fine or thinning hair report pleasant scent and improved manageability after the exfoliating wash

reviewers with fine/thinning hair

A subset of reviewers report unexpected dandruff/flaking developing after starting regular use

reviewers new to the clarifying formula

Some reviewers report increased dryness or scalp irritation after use, contrary to the moisturizing/growth-support marketing

reviewers with sensitive scalp

Thick & Full+ Biotin & Collagen Shampoo for Thin Hair

Reviewers with damaged or overprocessed hair (bleached, heat-styled) report improved softness and shine, with several calling it worth the higher price versus typical drugstore shampoos

reviewers with chemically/heat-damaged hair

Reviewers describe pleasant lathering texture and a mild scent that leaves hair feeling clean and soft

general users

Reviewers with fine or thinning hair report noticeably more volume and fullness without weigh-down, and reduced hair fall over weeks of use

fine/thinning-hair reviewers

A subset of reviewers report the shampoo left their hair dry, rough, or lifeless, with some describing it as different from an earlier version of the product

general users

Reviewers like that the formula is sulfate-free, but at least one long-time user is skeptical of the added silicones and believes they contributed to hair thinning over time

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.

$0.54/oz vs $2.23/oz — OGX ProGrowth + Peptide Clarifying Hair Shampoo costs about 4.1× more per ounce than OGX Thick & Full+ Biotin & Collagen Shampoo for Thin Hair.

$0.00/oz median $1.47/oz $17.29/oz $2.23/oz ProGrowth + Peptide Clarif $0.54/oz Thick & Full+ Biotin & Col

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

Value readProGrowth + Peptide Clarifying Hair ShampooThick & Full+ Biotin & Collagen Shampoo for Thin Hair
Label
Upper-mid price for a shampooSits in the middle of the range for shampoos per ounce.
Lower cost than most shampoosCosts less per ounce than most shampoos we have researched.

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.

ProGrowth + Peptide Clarifying Hair Shampoo vs Hair Restore Strength + Purity ShampooNeutrogena · 100% function matchThick & Full+ Biotin & Collagen Shampoo for Thin Hair vs Repair Blonde Purple ShampooMarc Anthony · 86% function matchProGrowth + Peptide Clarifying Hair Shampoo vs Moisture Repair Shampoo MiniOdele · 96% function matchThick & Full+ Biotin & Collagen Shampoo for Thin Hair vs Healing Volume ShampooL'anza · 81% function matchProGrowth + Peptide Clarifying Hair Shampoo vs Volumizing ShampooOdele · 96% function matchThick & Full+ Biotin & Collagen Shampoo for Thin Hair vs Ultra Smooth ShampooAussie · 78% function matchProGrowth + Peptide Clarifying Hair Shampoo vs Royal Treatment Hydrating ShampooCHI · 93% function matchThick & Full+ Biotin & Collagen Shampoo for Thin Hair vs STIMULATE-ME.WASHKevin Murphy · 76% function match

ProGrowth + Peptide Clarifying Hair Shampoo · Thick & Full+ Biotin & Collagen Shampoo for Thin Hair · 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.
  • 8 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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