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Side by side

Function of Beauty Wavy Hair Shampoo vs Verb Purple Shampoo

98% function match · 12 of the 13 functions we compared match Formula overlap 54%. Function of Beauty Wavy Hair Shampoo and Verb Purple 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.

  • Wavy Hair Shampoo — colour-treated hair
  • Purple 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
Function of Beauty Wavy Hair Shampoo — 11 oz container Function of Beauty

Wavy Hair Shampoo

  • Shampoo
  • Drugstore
  • Sulfate-free
  • Protein-free
Verb Purple Shampoo — 12 oz container Verb

Purple Shampoo

  • Shampoo
  • Masstige
  • Sulfate-free
  • Protein-free
Price, size & price per ounce
about $10 11 oz · $0.91/oz
$18.70 12 oz · $1.56/oz
Value / price positioning
Priced with its peers $$$$$ Drugstore tier · costs less than 71% of the 817 shampoos we’ve priced
Upper-mid price for a shampoo $$$$$ Masstige tier · costs more than 52% 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
Moderate Removes oil and product; leaves some conditioning behind. Your hair
Moderate Removes oil and product; leaves some conditioning behind. 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
Present Fragrance is listed; it sits below the working ingredients. Your hair
Protein Same
None No protein or amino acids in the list. Your hair
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
Expected lather Same
Moderate An ordinary shampoo lather. Your hair
Moderate An ordinary shampoo lather. 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
  • Protein-sensitive hairthat stiffens when protein is added
  • Hard waterand swimmers dealing with mineral deposit
  • Fine hairthat flattens under most products
  • Colour-treated hairthat fades faster in a sulfate wash
  • Protein-sensitive hairthat stiffens when protein is added
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Hard waterand swimmers dealing with mineral deposit
Why you might skip it
  • Scents bother youthis product carries a scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Hair that needs proteinthere is none in this list
  • Scents bother youthis product carries a strong scent
  • Curly-method routinesthese silicones need a detergent to remove
  • Very dry or damaged hairit contains fast-drying alcohol
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
Wavy Hair
—
Where to buy
Brand website · Target
Brand website
Free of
  • sulfate-free
  • protein-free
  • sulfate-free
  • protein-free
Vegan
Vegan · label states
Vegan · label states
Cruelty-free
Cruelty-free · PETA-listed
Cruelty-free · PETA-listed
Scent
Fruity · Fresh & airy
FloralStrong

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.

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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

IngredientWavy Hair ShampooPurple Shampoo
Water
Neutral
#1Leading
#1Leading
Sodium Lauroyl Methyl Isethionate
Cleanses
#2Leading
#2Leading
Glycerin
Moisturizes
#3Leading
#3Leading
Potassium Sorbate
Stabilizes
#19Below the 1% line
#40Below the 1% line
Glycol Distearate
Softens
#11Below the 1% line
#5Supporting

What only one of them carries

Wavy Hair Shampoo

Purple Shampoo

Full ingredient list — Wavy Hair Shampoo (39)
Full ingredient list — Purple Shampoo (48)

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.

VerdictsWavy Hair ShampooPurple Shampoo
Supported
1
2
Partly supported
0
0
Stated by brand
2
2
Potential conflict
0
0

Wavy Hair Shampoo

  • 92% naturally-derivedStated by brandOnly the brand’s testing shows this.
  • Sulfate-free, paraben-free, vegan, cruelty-freeSupportedGentler on colour and coils.
  • Enhances natural waveStated by brandCan’t be confirmed from label.

Purple Shampoo

  • gluten-freeStated by brandCan’t be confirmed from label.
  • no harmful sulfatesStated by brandCan’t be confirmed from label.
  • PETA certified cruelty-freeSupportedMatches our researched record.
  • veganSupportedMatches our researched record.

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. Function of Beauty Wavy Hair Shampoo draws complaints about dryness and weight; Verb Purple Shampoo draws complaints about the packaging.

Wavy Hair Shampoo

Reviewers note improved wave definition and texture

wavy hair reviewers

Fragrance is frequently described as fruity/pleasant

A recurring subset of reviewers report dryness and brittleness, describing hair as feeling like straw

Hair loss/excessive shedding is reported by multiple reviewers as a serious concern

Some reviewers report greasy roots paired with dry ends

Purple Shampoo

Multiple reviewers comment favorably on scent and strong purple pigmentation

Praised for leaving hair feeling clean without a stripped/dried-out feeling

Reviewers with blonde/color-treated hair report effective toning of brassy or rusty tones

blonde/color-treated hair

One reviewer complained of a shipping/packaging issue (loose bottle lid) unrelated to formula performance

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.

$0.91/oz vs $1.56/oz — Verb Purple Shampoo costs about 1.7× more per ounce than Function of Beauty Wavy Hair Shampoo.

$0.00/oz median $1.47/oz $17.29/oz $0.91/oz Wavy Hair Shampoo $1.56/oz Purple Shampoo

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

Value readWavy Hair ShampooPurple Shampoo
Label
Priced with its peersSits in the middle of the range for shampoos per ounce.
Upper-mid price for a shampooSits 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.

Wavy Hair Shampoo vs Blonde Moment Treatment ShampooNot Your Mother's · 90% function matchPurple Shampoo vs Blonde Moment Treatment ShampooNot Your Mother's · 91% function matchWavy Hair Shampoo vs Straight Hair ShampooFunction of Beauty · 89% function matchPurple Shampoo vs Cool Blonde ShampoodpHUE · 88% function matchWavy Hair Shampoo vs EverPure Sulfate Free Purple ShampooL'Oreal Paris · 87% function matchPurple Shampoo vs Straight Hair ShampooFunction of Beauty · 87% function matchWavy Hair Shampoo vs Pureology Hydrate ShampooPureology · 87% function matchPurple Shampoo vs EverPure Sulfate Free Purple ShampooL'Oreal Paris · 87% function match

Wavy Hair Shampoo · Purple 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.
  • 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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