Nº.4 Curl Bond Shaper Hydrating Curl Shampoo

Olaplex

Nº.4 Curl Bond Shaper Hydrating Curl Shampoo

0.0
from 0 Ratings
Where to buy Possibly in stock

About this product

The Olaplex Nº.4 Curl Bond Shaper Hydrating Curl Shampoo is a misc. Our analysis of its 62 ingredients (43 low-risk) rates it Excellent (93/100). Based on its ingredients, it looks well-suited to dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Misc
Ingredients
62
Low-risk
43
Fragrance
Contains fragrance
Origin
United States

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 14/8
Good for dry skin
Glycol Distearate Gluconolactone Ethyl Linoleate Ethyl Oleate Xylitol Salvia Hispanica Seed Extract Caprylyl Glycol Glycerin Propylene Glycol Polyglycerin-3 Hydroxypropyl Bis-Hydroxyethyldimonium Chloride Hydroxypropyltrimonium Hyaluronate Jojoba Esters Lactic Acid
Caution for dry skin
Decyl Glucoside Sodium Cocoyl Isethionate Caprylic Acid Glycerin Sodium C14-16 Olefin Sulfonate Acrylates Copolymer Sodium Hydroxide Menthol
Oily/Acne-Prone Skin No data
Sensitive Skin 5/21
Good for sensitive skin
Glycerin Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate Jojoba Esters Menthol Sodium Metabisulfite
Caution for sensitive skin
Gluconolactone Ilex Paraguariensis Leaf Extract Menthyl Lactate Sodium Chloride Ethyl Linoleate Ethyl Oleate Caprylic Acid Glycerin Propylene Glycol Phenethyl Alcohol Citric Acid Sodium Benzoate Acacia Senegal Gum Potassium Sorbate Menthol Lactic Acid Phenoxyethanol Benzyl Alcohol Hexyl Cinnamal Limonene Citral

Ingredients list

62 total
Lower hazard (1) Higher hazard (7)
All62 Skin Conditioning29 Fragrance21 Film Forming14 Humectant12 Masking11 Hair Conditioning11 Perfuming8 Solvent8
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
B
Sodium Cocoyl Isethionate
(Cleansing, Hair Conditioning, Surfactant)
Fungal Acne
Fungal Acne Trigger
4
B
Cocamidopropyl Betaine
(Antistatic Agent, Hair Conditioning, Skin Conditioning, Sufactant, Foam Boosting, Viscosity Increasing Agent, Viscosity Controlling)
2
B
Sodium C14-16 Olefin Sulfonate
(Cleansing, Foaming, Surfactant)
Sulfate
Sulfate
1
B
Cocamidopropylamine Oxide
(Hair Conditioning, Sufactant, Foam Boosting, Hydrotrope)
1
B
Decyl Glucoside
(Cleansing, Emulsion Stabilising, Surfactant)
2
B
Acrylates Copolymer
(Adhesive, Artificial Nail Builder, Binding Agent, Film Forming, Hair Fixing, Suspending Agent Nonsurfactant, Antistatic Agent, Binding)
Sh-Oligopeptide-23 Sp
(Skin Conditioning)
Carthamus Tinctorius Oleosomes
(Emulsion Stabilising, Skin Conditioning, Skin Conditioning Emollient)
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
A
Polyquaternium-11
(Antistatic Agent, Film Forming, Hair Fixing)
3
A
Polyquaternium-7
(Antistatic Agent, Film Forming, Hair Fixing)
1
Salvia Hispanica Seed Extract
(Emollient, Skin Conditioning)
1
Ilex Paraguariensis Leaf Extract
(Hair Conditioning, Perfuming, Skin Conditioning)
1
A
Crambe Abyssinica Seed Oil
(Hair Conditioning, Skin Conditioning)
Linum Usitatissimum Seed Extract
(Perfuming, Skin Conditioning)
1
Hydroxypropyltrimonium Hyaluronate
(Film Forming, Humectant)
Helianthus Annuus Seed Oil
(Fragrance, Skin Conditioning, Skin Conditioning Emollient)
PERSEA GRATISSIMA OIL
(Skin Conditioning)
Helianthus Annuus Seed Wax
(Skin Conditioning)
1
Menthyl Lactate
(Flavoring Agent, Fragrance, Masking, Refreshing)
1
A
Jojoba Esters
(Emollient, Moisturising, Skin Conditioning, Soothing)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
3
A
Acacia Senegal Gum
(Adhesive, Fragrance, Film Forming, Masking)
1
Menthol
(Denaturant, External Analgesic, Flavoring Agent, Fragrance, Oral Health Caredrug, Masking, Refreshing, Soothing)
Good for Oily Skin
Good for Oily Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
Bad for Dry Skin
Bad for Dry Skin
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
A
Glycol Distearate
(Opacifying, Viscosity Increasing Agent, Emollient, Emulsifying, Skin Conditioning, Viscosity Controlling)
Fungal Acne
Fungal Acne Trigger
Polyester-37
(Film Forming, Hair Conditioning, Skin Conditioning)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
1
Ethyl Linoleate
(Fragrance, Skin Conditioning, Emollient, Perfuming)
Fungal Acne
Fungal Acne Trigger
1
Ethyl Oleate
(Fragrance, Hair Conditioning, Skin Conditioning, Emollient, Perfuming)
Fungal Acne
Fungal Acne Trigger
1
Caprylic Acid
(Fragrance, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Caprylic Acid., Emulsifying, Masking, Perfuming)
1
Xylitol
(Flavoring Agent, Humectant, Skin Conditioning)
4
B
Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Hydroxypropyl Bis-Hydroxyethyldimonium Chloride
(Humectant, Skin Conditioning)
1
A
Guar Hydroxypropyltrimonium Chloride
(Antistatic Agent, Hair Conditioning, Viscosity Increasing Agent, Film Forming, Skin Conditioning, Viscosity Controlling)
2
B
Acrylamidopropyltrimonium Chloride/Acrylamide Copolymer
(Antistatic Agent, Film Forming, Hair Fixing)
Sorbitan Oleate Decylglucoside Crosspolymer
(Cleansing, Surfactant Emulsifying, Surfactant Foam Boosting)
1
A
Hydroxypropylcellulose
(Binding Agent, Emulsion Stabilising, Film Forming, Viscosity Increasing Agent, Viscosityincreasing Agent Nonaqueous, Binding, Emulsifying, Viscosity Controlling)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
Polyglycerin-3
(Humectant)
3
B
Propylene Glycol
(Fragrance, Humectant, Skin Conditioningagent Miscellaneous, Solvent, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
B
Phenethyl Alcohol
(Fragrance, Preservative, Masking)
1
A
Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate
(Antioxidant)
1
Gluconolactone
(Fragrance, Humectant, Solvent)
4
A
Sodium Metabisulfite
(Antioxidant, Preservative, Reducing)
1
Trisodium Ethylenediamine Disuccinate
(Chelating Agent)
PARFUM
(Fragrance, Perfuming)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
2
A
Chlorphenesin
(Cosmetic Biocide, Antimicrobial, Preservative)
1
Sodium Chloride
(Bulking Agent, Masking, Oral Care Agent, Viscosity Controlling)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
5
A
Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking)
Allergens
Allergens
3
A
Potassium Sorbate
(Fragrance, Preservative)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
7
Citral
(Flavoring Agent, Fragrance, Masking)
Allergens
Allergens
Citrus Aurantium Amara Peel Oil
(Skin Conditioning)
5
Hexyl Cinnamal
(Fragrance, Masking)
Allergens
Allergens
6
Limonene
(Deodorant, Perfuming, Solvent)
Allergens
Allergens

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

Browse similar misc
No close formula match yet — browse other products like this

Key ingredients

Cocamidopropyl Betaine
Skin Conditioning
Sh-Oligopeptide-23 Sp
Skin Conditioning
Carthamus Tinctorius Oleosomes
Skin Conditioning
Panthenol
Skin Conditioning
Salvia Hispanica Seed Extract
Emollient, Skin Conditioning
Ilex Paraguariensis Leaf Extract
Skin Conditioning

Benefits

Good for dry skin

Concerns

Contains paraben
Contains sulfate
Contains eu allergen
Not fungal acne (malassezia) safe
Citral — higher EWG
May not suit sensitive skin

EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Cocamidopropyl Betaine
Antistatic agent, Hair conditioning
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR B Antistatic agentHair conditioningSkin conditioningSufactantFoam boostingViscosity increasing agentViscosity controlling
Cocamidopropylamine Oxide
Hair conditioning, Sufactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningSufactantFoam boostingHydrotrope
Decyl Glucoside
Cleansing, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingEmulsion stabilisingSurfactant
Acrylates Copolymer
Adhesive, Artificial nail builder
Low-hazard ingredient.Read moreShow less
EWG 2 CIR B AdhesiveArtificial nail builderBinding agentFilm formingHair fixingSuspending agent -nonsurfactantAntistatic agentBinding
Sh-Oligopeptide-23 Sp
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Carthamus Tinctorius Oleosomes
Emulsion stabilising, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Emulsion stabilisingSkin conditioningSkin conditioning emollient
Polyquaternium-11
Antistatic agent, Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentFilm formingHair fixing
Polyquaternium-7
Antistatic agent, Film forming
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Antistatic agentFilm formingHair fixing
Salvia Hispanica Seed Extract
Emollient, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 EmollientSkin conditioning
Ilex Paraguariensis Leaf Extract
Hair conditioning, Perfuming
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningPerfumingSkin conditioning
Crambe Abyssinica Seed Oil
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioning
Linum Usitatissimum Seed Extract
Perfuming, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A PerfumingSkin conditioning
Hydroxypropyltrimonium Hyaluronate
Film forming, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Film formingHumectant
Helianthus Annuus Seed Oil
Fragrance, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceSkin conditioningSkin conditioning emollient
+ 31 more — see the full ingredients list above
Sodium Cocoyl Isethionate
Cleansing, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingHair conditioningSurfactant Fungal-acne trigger
Sodium C14-16 Olefin Sulfonate
Cleansing, Foaming
Low-hazard ingredient.Read moreShow less
EWG 2 CIR B CleansingFoamingSurfactant Sulfate
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning Good for Dry Skin
Menthol
Denaturant, External analgesic
Potentially a skin irritantRead moreShow less
EWG 1 DenaturantExternal analgesicFlavoring agentFragranceOral health caredrugMaskingRefreshingSoothing Good for Oily SkinBad for Sensitive SkinBad for Dry Skin
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Glycol Distearate
Opacifying, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A OpacifyingViscosity increasing agentEmollientEmulsifyingSkin conditioningViscosity controlling Fungal-acne trigger
Ethyl Linoleate
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceSkin conditioningEmollientPerfuming Fungal-acne trigger
Ethyl Oleate
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceHair conditioningSkin conditioningEmollientPerfuming Fungal-acne trigger
Lactic Acid
Exfoliant, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B ExfoliantFragranceHumectantPh adjusterSkin-conditioning agent -humectantSkin conditioningBuffering agent Bad for Sensitive Skin
Propylene Glycol
Fragrance, Humectant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B FragranceHumectantSkin-conditioningagent - miscellaneousSolventViscosity decreasing agentSkin conditioningViscosity controlling Good for Dry Skin
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin
Benzyl Alcohol
External analgesic, Fragrance
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR A External analgesicFragranceOral health care drugPreservativeSolventViscosity decreasing agentMasking Allergens
Citral
Flavoring agent, Fragrance
Higher-hazard ingredient.Read moreShow less
EWG 7 Flavoring agentFragranceMasking Allergens
Hexyl Cinnamal
Fragrance, Masking
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceMasking Allergens
+ 1 more — see the full ingredients list above

How to use

How to use

  • 1 Evening, start slow: Best in the PM a few times a week to begin with; avoid layering with other strong actives the same night.
  • 2 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

AHA (acid exfoliant) 5–10% (OTC)

OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.

Lactic Acid

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

From the community

0
Reviews
0
Saved by users
0
In collections

Ratings & reviews

Write a Review
0.0
from 0 ratings

Used this product? Rate it in 10 seconds

Alternatives