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Side by side

Joico Defy Damage Protective Conditioner vs Joico YouthLock Conditioner Formulated With Collagen

90% function match · 8 of the 10 functions we compared match Formula overlap 44%. Joico Defy Damage Protective Conditioner and Joico YouthLock Conditioner Formulated With Collagen 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.

  • Defy Damage Protective Conditioner — maximum slip
  • YouthLock Conditioner Formulated With Collagen — maximum slip

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
Joico Defy Damage Protective Conditioner — 8.5 oz container Joico

Defy Damage Protective Conditioner

  • Conditioner
  • Salon
  • Sulfate-free
Joico

YouthLock Conditioner Formulated With Collagen

  • Conditioner
  • Salon
  • Sulfate-free
  • Moisture-rich
Price, size & price per ounce
$26 8.5 oz · $2.11/oz
$26 8.5 oz · $3.06/oz
Value / price positioning
Upper-mid price for a conditioner $$$$$ Salon tier · costs more than 60% of the 689 conditioners we’ve priced
Same job for less elsewhere $$$$$ Salon tier · costs more than 75% of the 689 conditioners 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
Oils and butters Same
Low Oils are present, but low enough to be a finishing touch. Your hair
Low Oils are present, but low enough to be a finishing touch. Your hair
Slip / detangling Same
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
High Conditioning agents sit high in the list — this is a detangling formula. Your hair
Weight on hair Same
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Medium Middle of the range — noticeable on fine hair, light on coarse hair. Your hair
Fragrance
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. Your hair
Present Fragrance is listed; it sits below the working ingredients. Your hair
Protein Same
Minor Protein appears, low enough to be a supporting ingredient. Your hair
Minor Protein appears, low enough to be a supporting ingredient. 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
High Your hair
High 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
  • Maximum slipfor hair that tangles the moment it is wet
  • Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers
  • A wide range of haira middle-of-the-range weight
  • Maximum slipfor hair that tangles the moment it is wet
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Cuticle-smoothing pHa pH adjuster brings it to the acidic range hair prefers
  • A wide range of haira middle-of-the-range weight
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
  • 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
Conditioner
Conditionercream
Line
Defy Damage
—
Where to buy
Ulta · Salons
Salons · Brand website · Grocery / mass
Free of
  • sulfate-free
  • sulfate-free
Vegan
Not vegan · ingredient list
Not vegan · ingredient list
Cruelty-free
Cruelty-free · PETA-listed
Cruelty-free · PETA-listed
Scent
Scented, not described
Scented, not described
How often
—
every wash

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

IngredientDefy Damage Protective ConditionerYouthLock Conditioner Formulated With Collagen
Water
Neutral
#1Leading
#1Leading
Stearyl Alcohol
Softens
#2Leading
#6Supporting
Behentrimonium Chloride
Detangles
#3Leading
#3Leading
Cetyl Esters
Softens
#4Supporting
#16Below the 1% line
Fragrance
Fragrance
#7Below the 1% line
#10Below the 1% line
Laurdimonium Hydroxypropyl Hydrolyzed Keratin
Protein
#17Below the 1% line
#36Below the 1% line
Isopropyl Alcohol
Drying
#36Below the 1% line
#12Below the 1% line
Dipropylene Glycol
Moisturizes
#41Below the 1% line
#4Supporting
Propylene Glycol
Moisturizes
#29Below the 1% line
#7Supporting

What only one of them carries

Defy Damage Protective Conditioner

YouthLock Conditioner Formulated With Collagen

Full ingredient list — Defy Damage Protective Conditioner (48)
Full ingredient list — YouthLock Conditioner Formulated With Collagen (41)

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.

VerdictsDefy Damage Protective ConditionerYouthLock Conditioner Formulated With Collagen
Supported
1
1
Partly supported
1
1
Stated by brand
2
0
Potential conflict
0
0

Defy Damage Protective Conditioner

  • Gentle enough to use every dayStated by brandCan’t be confirmed from label.
  • Mighty enough to replenish hydration and build strength and resiliencePartly supportedSome hydration, at a low level.
  • Protects hair from future damageStated by brandCan’t be confirmed from label.
  • Detangles and wards off fading hair colorSupportedEasier detangling, less breakage.

YouthLock Conditioner Formulated With Collagen

  • Formulated with Collagen and Smart Release Technology (liposome delivery) to continuously release Rosehip Oil, Arginine and KeratinSupportedThe named ingredient is really there.
  • Restores strength in mature hair experiencing breakage-related thinningPartly 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.

Joico Defy Damage Protective Conditioner draws complaints about the scent and irritation.

Defy Damage Protective Conditioner

Reviewers report the conditioner is efficient with less product needed per use and leaves hair feeling less greasy than prior conditioners they used

general users comparing to prior products

Reviewers praise the scent and describe it as bringing life back into damaged hair

general users, contrasts with the fragrance complaints above

Some reviewers switching from another salon brand report scalp itching and breakouts after a few days of use

reviewers switching brands, possible sensitivity

A subset of reviewers describe the conditioner's fragrance as unpleasant, likening it to a sewer or musty smell strong enough to require re-washing hair

fragrance-sensitive reviewers

YouthLock Conditioner Formulated With Collagen

The product works particularly well for mature hair experiencing thinning and age-related damage, restoring weight and movement to thin strands.

customers with mature and thinning hair

Many reviewers report noticeable improvements in hair health, softness and reduced breakage after just two to three uses of the conditioner.

customers evaluating product efficacy

Users with fine, thin, or brittle hair consistently praise the conditioner for adding shine and silkiness without weighing hair down or causing flatness.

customers with delicate or fragile hair

Some users with wavy or curly hair report the conditioner did not enhance their natural wave or curl pattern as expected.

customers with textured hair seeking curl enhancement

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.

$2.11/oz vs $3.06/oz — Joico YouthLock Conditioner Formulated With Collagen costs about 1.5× more per ounce than Joico Defy Damage Protective Conditioner.

$0.09/oz median $1.60/oz $56.25/oz $2.11/oz Defy Damage Protective Con $3.06/oz YouthLock Conditioner Form

Every mark sits on one distribution because these are compared against the same set: 689 conditioners with a computable unit price.

Value readDefy Damage Protective ConditionerYouthLock Conditioner Formulated With Collagen
Label
Upper-mid price for a conditionerSits in the middle of the range for conditioners 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.

Defy Damage Protective Conditioner vs Colorful Anti-Fade ConditionerJoico · 100% function matchYouthLock Conditioner Formulated With Collagen vs Alterna Caviar Anti-Aging Multiplying Volume ConditionerAlterna Haircare · 98% function matchDefy Damage Protective Conditioner vs Nioxin Scalp + Hair Thickening System 1 ConditionerNioxin · 100% function matchYouthLock Conditioner Formulated With Collagen vs Royal Treatment Hydrating ConditionerCHI · 98% function matchDefy Damage Protective Conditioner vs Nioxin Scalp + Hair Thickening System 2 ConditionerNioxin · 100% function matchYouthLock Conditioner Formulated With Collagen vs Extra Love ConditionerIGK Hair · 96% function matchDefy Damage Protective Conditioner vs Nioxin System 3 Scalp Therapy ConditionerNioxin · 100% function matchYouthLock Conditioner Formulated With Collagen vs Miracle Deep Conditioner Plus KeratinIt's a 10 · 96% function match

Defy Damage Protective Conditioner · YouthLock Conditioner Formulated With Collagen · All conditioners 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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