Skip to main content

Side by side

IGK Hair Good Behavior Ultra Smooth Conditioner vs IGK Hair Legendary Conditioner

60% function match · 5 of the 10 functions we compared match Formula overlap 46%. IGK Hair Good Behavior Ultra Smooth Conditioner and IGK Hair Legendary Conditioner 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.

  • Good Behavior Ultra Smooth Conditioner — protein-sensitive hair
  • Legendary Conditioner — 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
IGK Hair Good Behavior Ultra Smooth Conditioner — 8 oz container IGK Hair

Good Behavior Ultra Smooth Conditioner

  • Conditioner
  • Salon
  • Sulfate-free
  • Silicone-free
IGK Hair Legendary Conditioner — 8 oz container IGK Hair

Legendary Conditioner

  • Conditioner
  • Masstige
  • Sulfate-free
  • Protein-free
Price, size & price per ounce
about $32 8 oz · $4.00/oz
$32 8 oz · $4.00/oz
Value / price positioning
Same job for less elsewhere $$$$$ Salon tier · costs more than 84% of the 689 conditioners we’ve priced
Same job for less elsewhere $$$$$ Masstige tier · costs more than 84% of the 689 conditioners we’ve priced
Best for hair types
Curly–Coily A heavy formula: coarse, curlier strands carry it without flattening. 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
Oils and butters Differs
Moderate Oils sit high in the list — a softening, coating formula. Your hair
High Butters near the top: a heavy, softening formula. 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 Differs
Rich Heavy butters and waxes in the first eight ingredients. 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
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 Differs
None Nothing here needs a detergent wash to remove. Your hair
High Water-insoluble silicones or waxes: a detergent wash is what removes them. Your hair
Clarifying wash needed
Moderate 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
  • Protein-sensitive hairthat stiffens when protein is added
  • Maximum slipfor hair that tangles the moment it is wet
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Protein-sensitive hairthat stiffens when protein is added
  • Maximum slipfor hair that tangles the moment it is wet
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Very dry hairno fast-drying alcohol in the list
Why you might skip it
  • Scents bother youthis product carries a scent
  • Oily scalp or fine hairthat gets weighed down
  • 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
  • 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
Conditioner
Conditioner
Line
Good Behavior
Legendary
Where to buy
Brand website · Sephora
Brand website
Free of
  • sulfate-free
  • silicone-free
  • protein-free
  • curly-method compatible
  • sulfate-free
  • protein-free
Scent
Scented, not described
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

$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

IngredientGood Behavior Ultra Smooth ConditionerLegendary Conditioner
Water
Neutral
#1Leading
#1Leading
Glycerin
Moisturizes
#3Leading
#3Leading
Behentrimonium Chloride
Detangles
#5Supporting
#6Supporting
Cetearyl Alcohol
Softens
#6Supporting
#2Leading
Fragrance
Fragrance
#32Below the 1% line
#7Below the 1% line
Limonene
Fragrance
#36Below the 1% line
#28Below the 1% line

What only one of them carries

Good Behavior Ultra Smooth Conditioner

Legendary Conditioner

Full ingredient list — Good Behavior Ultra Smooth Conditioner (36)
Full ingredient list — Legendary Conditioner (28)

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.

VerdictsGood Behavior Ultra Smooth ConditionerLegendary Conditioner
Supported
2
2
Partly supported
0
0
Stated by brand
0
0
Potential conflict
0
0

Good Behavior Ultra Smooth Conditioner

  • Frizz-Blocking Barrier technology that helps stop frizz before it forms in the wet to dry stagesSupportedSmoother strands, less frizz.
  • Silicone-free, PEG-free and infused with smoothing agents to add shine and moisture without adding weightSupportedNothing that needs a strong wash.

Legendary Conditioner

  • nourishes and adds shine while sealing in moistureSupportedHelps hair feel hydrated.
  • keeping hair smooth, soft and bouncySupportedSmoother strands, less frizz.

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 frizz control.

Good Behavior Ultra Smooth Conditioner

Praised as lightweight, not weighing hair down despite strong smoothing effect

fine, color-treated hair

Works well paired with the rest of the Good Behavior line (shampoo, scalp treatment, thermal spray) as a system

general

Recommended by hairstylists; some long-time users report it is the only product that keeps their curly hair from frizzing over decades of use

naturally curly hair, long-term users

Reviewers in humid climates report the conditioner controls frizz effectively where other products failed

humid-climate/fine-to-wavy hair

Legendary Conditioner

Cross-generational use reported (multiple household members using the same bottle)

Leaves hair soft and frizz-free, described as creamy and rinsing out cleanly

Recommended as a required pairing with the Legendary shampoo for best results

reviewers who tried the shampoo alone first

Works well on dry, color-treated hair specifically

reviewers with color-treated or dry 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.

$4.00/oz vs $4.00/oz — within about the same cost per ounce.

$0.09/oz median $1.60/oz $56.25/oz $4.00/oz Good Behavior Ultra Smooth $4.00/oz Legendary Conditioner

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

Value readGood Behavior Ultra Smooth ConditionerLegendary Conditioner
Label
Same job for less elsewhereYou are paying above the range for a formula close to several lower-priced options.
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.

Good Behavior Ultra Smooth Conditioner vs Flaxseed Smoothing Leave-In or Rinse Out ConditionerCantu · 96% function matchLegendary Conditioner vs TELEVISION Perfect Hair ConditionerR+Co · 100% function matchGood Behavior Ultra Smooth Conditioner vs Super Smooth Cream ConditionerBounce Curl · 95% function matchLegendary Conditioner vs Clay & Charcoal Soften & Moisture Replenish ConditionerCreme of Nature · 91% function matchGood Behavior Ultra Smooth Conditioner vs Delicate Volumising Conditioner with Rose ExtractsChristophe Robin · 93% function matchLegendary Conditioner vs MORE LIFE Color Extending ConditionerIGK Hair · 90% function matchGood Behavior Ultra Smooth Conditioner vs Mango & Tulsi Nourishing ConditionerMielle Organics · 93% function matchLegendary Conditioner vs Hairdresser's Invisible Oil Hydrating ConditionerBumble and bumble · 90% function match

Good Behavior Ultra Smooth Conditioner · Legendary Conditioner · 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.

Still unsure? Take your consultation or browse more products.

Your personalized hair plan

Tell us what’s going on with your hair, see what we understand, and get a plan built around it — with the reason behind every recommendation.

Free to start · $49.00 for your consultation and hair profile · No subscription · Nothing you must buy

Start your consultation