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Side by side

Person & Covey DHS Clear Shampoo vs Redken Extreme Length Shampoo

89% function match · 11 of the 13 functions we compared match Formula overlap 74%. Person & Covey DHS Clear Shampoo and Redken Extreme Length Shampoo 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.

  • DHS Clear Shampoo — fragrance-free
  • Extreme Length Shampoo — protein-sensitive 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
Person & Covey DHS Clear Shampoo — 8 oz container Person & Covey

DHS Clear Shampoo

  • Shampoo
  • Drugstore
  • Silicone-free
  • Fragrance-free
Redken Extreme Length Shampoo — 10.1 oz container Redken

Extreme Length Shampoo

  • Shampoo
  • Salon
  • Silicone-free
  • Protein-free
Price, size & price per ounce
$22.67 8 oz · $2.83/oz
$30–31 10.1 oz · $3.04/oz
Value / price positioning
Upper-mid price for a shampoo $$$$$ Drugstore tier · costs more than 73% of the 817 shampoos we’ve priced
Same job for less elsewhere $$$$$ Salon tier · costs more than 76% 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
None found No humectants found — nothing here pulls water into the hair. Your hair
Moderate Humectants in the working part of the formula. 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
Light Water-first and light: unlikely to flatten fine hair. Your hair
Fragrance
None listed No fragrance is listed. Your hair
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. 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
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
None No chelating agent in the list. Your hair
None No chelating agent in the list. Your hair
Formula completeness
out of 10
Covers the core
out of 10
Complete for its job
Who should choose this
  • Fragrance-freeno fragrance (parfum) on the label
  • Protein-sensitive hairthat stiffens when protein is added
  • Fast-oiling scalpsthat need a real reset wash
  • Maximum slipfor hair that tangles the moment it is wet
  • Protein-sensitive hairthat stiffens when protein is added
  • Fast-oiling scalpsthat need a real reset wash
  • Fine hairthat flattens under most products
  • Silicone-free routinesno silicones appear in the list
Why you might skip it
  • Sulfate-free routinesit uses a sulfate detergent
  • Dry or damaged haira strong detergent system strips as it cleans
  • Hair that needs proteinthere is none in this list
  • Scents bother youthis product carries a scent
  • Sulfate-free routinesit uses a sulfate detergent
  • Dry or damaged haira strong detergent system strips as it cleans
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
—
Extreme Length
Where to buy
Grocery / mass · Amazon
Target · Salons
Free of
  • silicone-free
  • fragrance-free
  • protein-free
  • silicone-free
  • protein-free
Cruelty-free
—
Not cruelty-free · PETA-listed
Scent
—
Scented, not described

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

IngredientDHS Clear ShampooExtreme Length Shampoo
Water
Neutral
#1Leading
#1Leading
Sodium Laureth Sulfate
Cleanses
#2Leading
#2Leading
Cocamidopropyl Betaine
Cleanses
#3Leading
#4Supporting
Benzyl Alcohol
Stabilizes
#6Below the 1% line
#15Below the 1% line

What only one of them carries

DHS Clear Shampoo

Extreme Length Shampoo

Full ingredient list — DHS Clear Shampoo (7)
Full ingredient list — Extreme Length Shampoo (18)

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.

VerdictsDHS Clear ShampooExtreme Length Shampoo
Supported
0
0
Partly supported
0
2
Stated by brand
2
1
Potential conflict
0
0

DHS Clear Shampoo

  • Formulated with only 7 ingredients to help avoid skin reactions for sensitive skinStated by brandCheck the position, not the name.
  • Cleanses and conditions without harsh detergentsStated by brandCan’t be confirmed from label.

Extreme Length Shampoo

  • Strengthen distressed hairPartly supportedSupports the surface, not a treatment.
  • Increase strength, shine and softnessStated by brandCan’t be confirmed from label.
  • Helps prevent breakage, promote healthy hair growth, and gently cleansePartly supportedSupports the surface, not a treatment.

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.

Person & Covey DHS Clear Shampoo draws complaints about the packaging.

DHS Clear Shampoo

Gentle enough for frequent/daily washing, helpful for oilier scalps needing more frequent cleansing without over-drying ends

daily washers with oily scalp/dry ends

Well tolerated for eczema, psoriasis, and fragrance-sensitive scalps where scented shampoos cause flare-ups

sensitive-skin/dermatology patients

Minimal 7-ingredient formula reassures users avoiding common allergens/irritants

Plain unscented formula and clinical packaging read as less indulgent than mainstream grocery shampoos

Extreme Length Shampoo

Strong repurchase intent and enthusiastic recommendation language ("magic in a bottle")

Target reviewers, small sample (3 total reviews across both sizes as of capture date)

Reviewers report visible hair growth and increased thickness after roughly 3 months of consistent use

Long-term users (~3 month usage window) on Target listings

Hair described as feeling notably stronger and healthier, with reduced breakage, after switching to this shampoo

Reviewer specifically contrasting with a prior regular/non-strengthening shampoo

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.

$2.83/oz vs $3.04/oz — within about the same cost per ounce.

$0.00/oz median $1.47/oz $17.29/oz $2.83/oz DHS Clear Shampoo $3.04/oz Extreme Length Shampoo

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

Value readDHS Clear ShampooExtreme Length 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.

DHS Clear Shampoo vs Dream Kids Olive Miracle Detangling Moisturizing ShampooAfrican Pride · 100% function matchExtreme Length Shampoo vs A Curl Can Dream Weightless Moisture ShampooMatrix · 100% function matchDHS Clear Shampoo vs Deep Moisture ShampooAphogee · 93% function matchExtreme Length Shampoo vs Kerastase Genesis Bain Hydra-Fortifiant ShampooKerastase · 98% function matchDHS Clear Shampoo vs Au Naturale Anti-Shrinkage Beyond Gentle Sulfate-Free WashDark and Lovely · 93% function matchExtreme Length Shampoo vs Volume Injection ShampooRedken · 98% function matchDHS Clear Shampoo vs BC Bonacure Moisture Kick ShampooSchwarzkopf Professional · 91% function matchExtreme Length Shampoo vs Kerastase Specifique Bain Divalent ShampooKerastase · 98% function match

DHS Clear Shampoo · Extreme Length 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.
  • 11 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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