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Side by side

Hask Smooth + Keratin & Jojoba Oil Shampoo vs Olaplex Nº.4CURL Bond Shaper Hydrating Curl Shampoo

94% function match · 11 of the 13 functions we compared match Formula overlap 43%. Hask Smooth + Keratin & Jojoba Oil Shampoo and Olaplex Nº.4CURL Bond Shaper Hydrating Curl 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.

  • Smooth + Keratin & Jojoba Oil Shampoo — colour-treated hair
  • Nº.4CURL Bond Shaper Hydrating Curl 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
Hask Smooth + Keratin & Jojoba Oil Shampoo — brand photograph Hask

Smooth + Keratin & Jojoba Oil Shampoo

  • Shampoo
  • Value
  • Sulfate-free
  • Silicone-free
Olaplex Nº.4CURL Bond Shaper Hydrating Curl Shampoo — 8.5 oz container Olaplex

Nº.4CURL Bond Shaper Hydrating Curl Shampoo

  • Shampoo
  • Salon
  • Sulfate-free
  • Silicone-free
Price, size & price per ounce
$7.97 12 oz · $0.62/oz
$16 3.38 oz · $4.73/oz

Compared at different sizes — 12 oz against 3.38 oz. Per-ounce prices favour the larger bottle.

Value / price positioning
Lower cost than most shampoos $$$$$ Value tier · costs less than 84% of the 805 shampoos we’ve priced
Same job for less elsewhere $$$$$ Salon tier · costs more than 94% of the 805 shampoos we’ve priced
Best for hair types
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
Wavy–Coily The brand’s own claims name curly or textured hair. Your hair
Moisture level Same
Moderate Humectants in the working part of the formula. 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 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
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
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
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
Moderate Your hair
Moderate 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
  • Dry, thirsty hairhumectants and emollients both sit up front
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Colour-treated hairthat fades faster in a sulfate wash
  • Fast-oiling scalpsthat need a real reset wash
  • Curly-method routinesno sulfates and no water-insoluble silicones
  • Hard waterand swimmers dealing with mineral deposit
Why you might skip it
  • Scents bother youthis product carries a scent
  • Dry or damaged haira strong detergent system strips as it cleans
  • Stretching wash dayswaxes stay until a detergent wash removes them
  • Scents bother youthis product carries a scent
  • Dry or damaged haira strong detergent system strips as it cleans
  • Stretching wash dayswaxes stay until a detergent wash removes them
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
Smooth + Keratin & Jojoba Oil
Nº.4CURL/Nº.5CURL Bond Shaper
Where to buy
Grocery / mass · Dollar General
Brand website · Target
Free of
  • sulfate-free
  • silicone-free
  • curly-method compatible
  • sulfate-free
  • silicone-free
  • curly-method compatible
Vegan
Not vegan · ingredient list
—
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

IngredientSmooth + Keratin & Jojoba Oil ShampooNº.4CURL Bond Shaper Hydrating Curl Shampoo
Water
Neutral
#1Leading
#1Leading
Sodium C14-16 Olefin Sulfonate
Cleanses
#2Leading
#4Supporting
Sodium Chloride
Stabilizes
#4Supporting
#53Below the 1% line
Cocamidopropyl Betaine
Cleanses
#5Supporting
#3Leading
Glycerin
Moisturizes
#6Supporting
#27Below the 1% line
Fragrance
Fragrance
#26Below the 1% line
#50Below the 1% line
Hexyl Cinnamal
Fragrance
#27Below the 1% line
#61Below the 1% line
Decyl Glucoside
Cleanses
#15Secondary
#6Supporting

What only one of them carries

Smooth + Keratin & Jojoba Oil Shampoo

Nº.4CURL Bond Shaper Hydrating Curl Shampoo

Full ingredient list — Smooth + Keratin & Jojoba Oil Shampoo (27)
Full ingredient list — Nº.4CURL Bond Shaper Hydrating Curl Shampoo (62)

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.

VerdictsSmooth + Keratin & Jojoba Oil ShampooNº.4CURL Bond Shaper Hydrating Curl Shampoo
Supported
1
0
Partly supported
0
1
Stated by brand
0
3
Potential conflict
0
0

Smooth + Keratin & Jojoba Oil Shampoo

  • Infused with keratin to help reduce frizz, this shampoo leaves unruly hair feeling smooth and revitalized with incredible shineSupportedSmoother strands, less frizz.

Nº.4CURL Bond Shaper Hydrating Curl Shampoo

  • Instantly strong hair and less breakage in one usePartly supportedSupports the surface, not a treatment.
  • Infinitely defined curlsStated by brandCan’t be confirmed from label.
  • 50% less frizz, even in high humidityStated by brandOnly the brand’s testing shows this.
  • 96% agree hair was easier to detangleStated by brandOnly the brand’s testing shows this.

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 moisture. Olaplex Nº.4CURL Bond Shaper Hydrating Curl Shampoo draws complaints about residue or cast.

Smooth + Keratin & Jojoba Oil Shampoo

Companion product in the same Hask Smooth + Keratin & Jojoba Oil line (Deep Conditioner Packet, 1.75oz) carries a strong retailer rating aggregate at Target (4.5 stars, 654 ratings), suggesting positive reception for the line's smoothing/hydrating positioning though this is not the exact shampoo SKU

Rating aggregate for a companion line product, not this exact SKU -- no individual review text available

Positioned by the brand for daily use on frizzy, dry, or color-treated hair with a keratin/jojoba-oil smoothing claim; independent customer review text could not be fetched this session (see task notes) so this reflects brand-stated positioning, not verified reviewer sentiment

Sourced from brand product copy, not independently verified reviewer text

SkinSafe allergen database (2016-dated capture of the prior-formula listing) flags fragrance and methylisothiazolinone as the two ingredients preventing a 100%%-allergen-free rating, relevant to scalp-sensitivity concerns

Dermatology-database flag, not consumer review text; reflects the prior formulation

Nº.4CURL Bond Shaper Hydrating Curl Shampoo

Reviewers report clean springy shiny curls, softness, definition, and less frizz without stripping.

Bev and Ayesha, Ulta reviewers

A promotional reviewer reports soft hydrated defined curls without weight.

Debora, Ulta promotional review

A critical reviewer reports scalp buildup and straw-like ends; another reports a package arriving open.

Mackenzie and Lilia, Ulta reviewers

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.

$0.62/oz vs $4.73/oz — Olaplex Nº.4CURL Bond Shaper Hydrating Curl Shampoo costs about 7.6× more per ounce than Hask Smooth + Keratin & Jojoba Oil Shampoo.

$0.00/oz median $1.47/oz $17.29/oz $0.62/oz Smooth + Keratin & Jojoba $4.73/oz Nº.4CURL Bond Shaper Hydra

Every mark sits on one distribution because these are compared against the same set: 805 shampoos with a computable unit price.

Value readSmooth + Keratin & Jojoba Oil ShampooNº.4CURL Bond Shaper Hydrating Curl Shampoo
Label
Lower cost than most shampoosCosts less per ounce than most shampoos we have researched.
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.

Smooth + Keratin & Jojoba Oil Shampoo vs Cantu Weightless Smoothing Hair ShampooCantu · 96% function matchNº.4CURL Bond Shaper Hydrating Curl Shampoo vs Cantu Weightless Smoothing Hair ShampooCantu · 97% function matchSmooth + Keratin & Jojoba Oil Shampoo vs Caviar Anti-Aging Restructuring Bond Repair ShampooAlterna Haircare · 91% function matchNº.4CURL Bond Shaper Hydrating Curl Shampoo vs Caviar Anti-Aging Restructuring Bond Repair ShampooAlterna Haircare · 94% function matchSmooth + Keratin & Jojoba Oil Shampoo vs Complete Color Care Purple Shampoo for Blondes & HighlightsMarc Anthony · 91% function matchNº.4CURL Bond Shaper Hydrating Curl Shampoo vs Forming Pre-Styling ShampooAmerican Crew · 93% function matchSmooth + Keratin & Jojoba Oil Shampoo vs Density Peptide ShampooVerb · 91% function matchNº.4CURL Bond Shaper Hydrating Curl Shampoo vs Garnier Fructis Curl Nourish Sulfate-Free ShampooGarnier Fructis · 91% function match

Smooth + Keratin & Jojoba Oil Shampoo · Nº.4CURL Bond Shaper Hydrating Curl 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.
  • 12 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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