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Side by side

Biolage Smooth Shine Milk vs GVP Smoothing Serum (Compare to Paul Mitchell Super Skinny Serum)

94% function match · 7 of the 8 functions we compared match Formula overlap 28%. Biolage Smooth Shine Milk and GVP Smoothing Serum (Compare to Paul Mitchell Super Skinny Serum) 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.

  • Smooth Shine Milk — protein-sensitive hair
  • Smoothing Serum (Compare to Paul Mitchell Super Skinny Serum) — dull-looking 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
Biolage Smooth Shine Milk — 8.5 oz container Biolage

Smooth Shine Milk

  • Finisher
  • Salon
  • Sulfate-free
  • Protein-free
Price, size & price per ounce
$27.60 8.5 oz · $3.25/oz
$18.99 6 oz · $3.17/oz
Value / price positioning
Lower cost than most serums $$$$$ Salon tier · costs less than 76% of the 77 serums we’ve priced
Lower cost than most serums $$$$$ Masstige tier · costs less than 78% of the 77 serums 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
Low Humectants appear, but low enough to be a minor part. Your hair
Shine system Same
High A silicone or oil blend does the shine work here. Your hair
High A silicone or oil blend does the shine work here. Your hair
Slip / detangling
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
Some Some slip, mostly from esters or silicones rather than conditioners. Your hair
Weight on 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
None No protein or amino acids in the list. Your hair
Silicone / wax buildup Same
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
Clarifying wash needed
Moderate Your hair
Moderate Your hair
Oils and butters Same
None No oils or butters in the list. Your hair
None No oils or butters in the list. Your hair
Humidity resistance
Claimed The brand claims humidity resistance; the ingredient list cannot confirm it. Your hair
Fast-drying alcohol
Present Fast-drying alcohol is present — it speeds drying and can read dry on the hair. Your hair
Formula completeness
out of 10
Complete for its job
out of 10
Complete for its job
Who should choose this
  • Protein-sensitive hairthat stiffens when protein is added
  • Maximum slipfor hair that tangles the moment it is wet
  • Dull-looking haira recognised shine system is present
  • Humid climatesthe brand claims humidity resistance
  • Dull-looking haira recognised shine system is present
Why you might skip it
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Very dry or damaged hairit contains fast-drying alcohol
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Picking it up locallywe have it recorded in one channel only
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
Finisherlotion
Finisherserum
Where to buy
Ulta · Brand website · Amazon …
Beauty supply
Free of
  • sulfate-free
  • protein-free
Scent
Scented, not described
Scented, not described
Humidity claim
Yes

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

IngredientSmooth Shine MilkSmoothing Serum (Compare to Paul Mitchell Super Skinny Serum)
Water
Neutral
#1Leading
#6Supporting
Dimethicone
Buildup
#2Leading
#3Leading
Phenoxyethanol
Stabilizes
#4Below the 1% line
#18Below the 1% line
Fragrance
Fragrance
#13Below the 1% line
#9Below the 1% line
Limonene
Fragrance
#18Below the 1% line
#22Below the 1% line
Hexyl Cinnamal
Fragrance
#19Below the 1% line
#16Below the 1% line
Linalool
Fragrance
#22Below the 1% line
#15Below the 1% line

What only one of them carries

Full ingredient list — Smooth Shine Milk (24)
Full ingredient list — Smoothing Serum (Compare to Paul Mitchell Super Skinny Serum) (25)

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.

Smooth Shine Milk

Gives a salon-blowout slip feel, reduces need for flat-ironing on damaged lengths

damaged hair

Excellent detangler post-wash, leaves hair silky and shiny

Longtime users say a reformulation made it stop working for their hair

reformulation complaint

Especially effective on coarse/frizzy hair; less suited to fine/thin hair

coarse hair

Smoothing Serum (Compare to Paul Mitchell Super Skinny Serum)

No review themes researched for this product yet.

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.

$3.17/oz vs $3.25/oz — within about the same cost per ounce.

$0.02/oz median $8.65/oz $41.54/oz $3.25/oz Smooth Shine Milk $3.17/oz Smoothing Serum (Compare t

Every mark sits on one distribution because these are compared against the same set: 77 serums with a computable unit price.

Value readSmooth Shine MilkSmoothing Serum (Compare to Paul Mitchell Super Skinny Serum)
Label
Lower cost than most serumsCosts less per ounce than most serums we have researched.
Lower cost than most serumsCosts less per ounce than most serums 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.

Smooth Shine Milk · Smoothing Serum (Compare to Paul Mitchell Super Skinny Serum) · All serums 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.
  • 5 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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