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Side by side

CHI BioSilk Color Therapy Cool Blonde Shampoo vs Sun Bum Blonde Purple Shampoo

89% function match · 11 of the 13 functions we compared match Formula overlap 54%. CHI BioSilk Color Therapy Cool Blonde Shampoo and Sun Bum Blonde 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.

  • BioSilk Color Therapy Cool Blonde Shampoo — colour-treated hair
  • Blonde 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
CHI BioSilk Color Therapy Cool Blonde Shampoo — 12 oz container CHI

BioSilk Color Therapy Cool Blonde Shampoo

  • Shampoo
  • Masstige
  • Sulfate-free
  • Silicone-free
Sun Bum Blonde Purple Shampoo — 10 oz container Sun Bum

Blonde Purple Shampoo

  • Shampoo
  • Drugstore
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
$23 12 oz · $1.92/oz
$9.99 10 oz · $1.05/oz
Value / price positioning
Upper-mid price for a shampoo $$$$$ Masstige tier · costs more than 60% of the 817 shampoos we’ve priced
Priced with its peers $$$$$ Drugstore tier · costs less than 65% 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 Differs
Prominent Protein high in the list — a strengthening formula, not a moisture one. Your hair
None No protein or amino acids in the list. 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
  • Protein-sensitive hairthat stiffens when protein is added
  • Fast-oiling scalpsthat need a real reset wash
  • 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
  • Hair that needs proteinthere is none in this list
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
—
Blonde Purple
Where to buy
Brand website
Brand website · Grocery / mass · Target
Free of
  • sulfate-free
  • silicone-free
  • curly-method compatible
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
Vegan
Not vegan · ingredient list
—
Cruelty-free
—
Cruelty-free · PETA-listed
Scent
Scented, not described
Floral

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

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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

IngredientBioSilk Color Therapy Cool Blonde ShampooBlonde Purple Shampoo
Water
Neutral
#1Leading
#1Leading
Sodium C14-16 Olefin Sulfonate
Cleanses
#2Leading
#2Leading
Cocamidopropyl Betaine
Cleanses
#3Leading
#3Leading
Acrylates Copolymer
Holds
#5Supporting
#13Secondary
Fragrance
Fragrance
#30Below the 1% line
#17Below the 1% line

What only one of them carries

BioSilk Color Therapy Cool Blonde Shampoo

Blonde Purple Shampoo

Full ingredient list — BioSilk Color Therapy Cool Blonde Shampoo (34)
Full ingredient list — Blonde Purple Shampoo (25)

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 Color Therapy Cool Blonde ShampooBlonde Purple Shampoo
Supported
2
1
Partly supported
0
0
Stated by brand
3
0
Potential conflict
0
0

BioSilk Color Therapy Cool Blonde Shampoo

  • Cancels out brassiness with violet pigmentsStated by brandCan’t be confirmed from label.
  • Keeps gray and white hair cool-tonedStated by brandCan’t be confirmed from label.
  • Sulfate-free formulaSupportedGentler on colour and coils.
  • BioSilk Color Therapy Cool Blonde Shampoo provides color protection to highlighted and lightened hair, helping to balance brassy tones.SupportedLess fade per wash.
  • This dynamic formula also neutralizes and eliminates unwanted yellow tones from grey and white hair to maintain healthier, shinier, and more vibrant color.Stated by brandCan’t be confirmed from label.

Blonde Purple Shampoo

  • Our Cruelty-Free Blonde Purple Shampoo is like a magic potion for natural and color-treated blonde and brown hairSupportedMatches 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.

CHI BioSilk Color Therapy Cool Blonde Shampoo draws complaints about tangling and dryness; Sun Bum Blonde Purple Shampoo draws complaints about volume and the packaging.

BioSilk Color Therapy Cool Blonde Shampoo

Blonde, frosted and grey-haired reviewers say it keeps their shade true and cuts brassiness, several using it for years, and a couple say friends notice their hair looks lightened after it.

blonde, highlighted and grey hair, long-term users

A minority saw no toning at all and say their highlights stayed yellow or that it is weaker than salon purple shampoos; a few critical reviews concern bottles arriving unsealed rather than the product.

the 14% one-to-three-star reviewers

Dryness is the recurring caveat: even reviewers who like the toning say it dries their hair out and needs a conditioner after, and one with baby-fine highlighted hair found it left a tangled mess.

fine and highlighted hair

It lathers well and the scent is called lovely and clean, though long-time BioSilk users miss the original Silk Therapy fragrance.

general reviewers, some long-time BioSilk users

Blonde Purple Shampoo

Several reviewers describe it as a more affordable, easier-to-find alternative to salon-brand purple shampoos

value-conscious reviewers

Reviewers with blonde, gray, or silver hair report the shampoo effectively neutralizes brassy or yellow tones

blonde/gray-haired reviewers

A reviewer noted the formula thickens in the bottle over time

long-term repeat buyer

Reviewers frequently mention liking the fragrance, though a couple felt it was less appealing than other Sun Bum hair products

general reviewer base

A reviewer with already very light hair found toning was minimal unless the shampoo was left in dry hair for at least 30 minutes

reviewer with very light/pre-lightened hair

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.

$1.05/oz vs $1.92/oz — CHI BioSilk Color Therapy Cool Blonde Shampoo costs about 1.8× more per ounce than Sun Bum Blonde Purple Shampoo.

$0.00/oz median $1.48/oz $17.29/oz $1.92/oz BioSilk Color Therapy Cool $1.05/oz Blonde Purple Shampoo

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

Value readBioSilk Color Therapy Cool Blonde ShampooBlonde Purple Shampoo
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.

BioSilk Color Therapy Cool Blonde Shampoo vs Ionic Color Illuminate ShampooCHI · 98% function matchBlonde Purple Shampoo vs Nº.4P Blonde Enhancer Toning ShampooOlaplex · 96% function matchBioSilk Color Therapy Cool Blonde Shampoo vs Royal Treatment Color Gloss Blonde Enhancing Purple ShampooCHI · 91% function matchBlonde Purple Shampoo vs Nexxus Clean & Pure Nourishing Detox ShampooNexxus · 94% function matchBioSilk Color Therapy Cool Blonde Shampoo vs Nexxus Clean & Pure Nourishing Detox ShampooNexxus · 91% function matchBlonde Purple Shampoo vs BLONDED BRIGHTENING SHAMPOOR+Co · 93% function matchBioSilk Color Therapy Cool Blonde Shampoo vs Peppermint Tea Tree Clarifying ShampooEden BodyWorks · 87% function matchBlonde Purple Shampoo vs Platinum Blonde Violet ShampooPaul Mitchell · 91% function match

BioSilk Color Therapy Cool Blonde Shampoo · Blonde 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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