No. 4C Bond Maintenance Clarifying Shampoo

Olaplex

No. 4C Bond Maintenance Clarifying Shampoo

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About this product

The Olaplex No. 4C Bond Maintenance Clarifying Shampoo is a misc. Our analysis of its 43 ingredients (36 low-risk) rates it Excellent (93/100). 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
43
Low-risk
36
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 5/8
Good for dry skin
Diethylhexyl Succinate Sodium PCA Histidine Sodium Lactate PCA
Caution for dry skin
Decyl Glucoside Lauryl Glucoside Sodium Lauroyl Glutamate Sodium Lauroyl Methyl Isethionate Sodium Lauryl Sulfoacetate Sodium Methyl Oleoyl Taurate Coco-glucoside Acrylates Copolymer
Oily/Acne-Prone Skin No data
Sensitive Skin 0/18
Caution for sensitive skin
Glycine Valine Serine Aspartic Acid Alanine Arginine Isoleucine Threonine Phenylalanine Proline Histidine Citric Acid Benzoic Acid Sodium Benzoate Phenoxyethanol Hexyl Cinnamal Limonene Citral

Ingredients list

43 total
Lower hazard (1) Higher hazard (7)
All43 Skin Conditioning28 Hair Conditioning19 Fragrance18 Antistatic Agent18 Foam Boosting10 Masking10 Surfactant7 Cleansing6
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
B
Sodium Lauroyl Methyl Isethionate
(Cleansing, Surfactant)
1
Cocamidopropyl Hydroxysultaine
(Antistatic Agent, Hair Conditioning, Skin Conditioning, Sufactant, Foam Boosting, Viscosity Increasing Agent, Viscosity Controlling)
1
B
Sodium Lauroyl Glutamate
(Antistatic Agent, Hair Conditioning, Surfactant)
1
B
Coco-Betaine
(Antistatic Agent, Hair Conditioning, Skin Conditioning, Sufactant, Foam Boosting, Viscosity Increasing Agent, Viscosity Controlling)
2
B
Disodium Laureth Sulfosuccinate
(Sufactant, Foam Boosting, Hydrotrope, Foaming)
2
B
Acrylates Copolymer
(Adhesive, Artificial Nail Builder, Binding Agent, Film Forming, Hair Fixing, Suspending Agent Nonsurfactant, Antistatic Agent, Binding)
4
B
Cocamidopropyl Betaine
(Antistatic Agent, Hair Conditioning, Skin Conditioning, Sufactant, Foam Boosting, Viscosity Increasing Agent, Viscosity Controlling)
1
B
Cocamidopropylamine Oxide
(Hair Conditioning, Sufactant, Foam Boosting, Hydrotrope)
1
B
Sodium Methyl Oleoyl Taurate
(Antistatic Agent, Cleansing, Foaming, Surfactant)
1
B
Decyl Glucoside
(Cleansing, Emulsion Stabilising, Surfactant)
Bis-Aminopropyl Diglycol Dimaleate
(Hair Conditioning, Hair Waving Or Straightening, Skin Conditioning)
1
A
Sodium Lauryl Sulfoacetate
(Cleansing, Foaming, Surfactant)
Sulfate
Sulfate
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
B
Coco-glucoside
(Cleansing, Foaming, Surfactant)
1
B
Lauryl Glucoside
(Cleansing, Surfactant)
2
A
Chlorphenesin
(Cosmetic Biocide, Antimicrobial, Preservative)
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
Trisodium Ethylenediamine Disuccinate
(Chelating Agent)
1
A
Diethylhexyl Succinate
(Emollient, Film Forming, Plasticizer, Skin Conditioning, Solvent)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
1
A
Polyquaternium-11
(Antistatic Agent, Film Forming, Hair Fixing)
3
A
Benzoic Acid
(Fragrance, Ph Adjuster, Preservative, Bulking Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
B
Sodium PCA
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
Pentasodium Triphosphate
(Chelating Agent, Ph Adjuster, Buffering Agent)
3
B
Sodium Lactate
(Buffering Agent, Exfoliant, Humectant, Keratolytic)
1
A
Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Aspartic Acid
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
3
B
PCA
(Humectant, Moisturising)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Glycine
(Buffering Agent, Fragrance, Hair Conditioning, Skin Conditioning Agent Miscellaneous, Antistatic Agent, Skin Conditioning)
1
A
Alanine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Serine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Valine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Isoleucine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent)
1
A
Proline
(Fragrance, Hair Conditioning, Skin Conditioning)
1
A
Threonine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Hair Waving Or Straightening)
1
A
Histidine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Humectant)
1
A
Phenylalanine
(Fragrance, Hair Conditioning, Skin Conditioning)
PARFUM
(Fragrance, Perfuming)
7
Citral
(Flavoring Agent, Fragrance, Masking)
Allergens
Allergens
5
Hexyl Cinnamal
(Fragrance, Masking)
Allergens
Allergens
6
Limonene
(Deodorant, Perfuming, Solvent)
Allergens
Allergens

My Ingredient Notes

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Key ingredients

Cocamidopropyl Hydroxysultaine
Skin Conditioning
Coco-Betaine
Skin Conditioning
Cocamidopropyl Betaine
Skin Conditioning
Bis-Aminopropyl Diglycol Dimaleate
Skin Conditioning
Panthenol
Skin Conditioning
Diethylhexyl Succinate
Emollient, Skin Conditioning

Benefits

Fungal-acne (Malassezia) safe

Concerns

Contains paraben
Contains sulfate
Contains eu allergen
Citral — higher EWG
May not suit dry skin
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
Sodium Lauroyl Methyl Isethionate
Cleansing, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingSurfactant
Cocamidopropyl Hydroxysultaine
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Antistatic agentHair conditioningSkin conditioningSufactantFoam boostingViscosity increasing agentViscosity controlling
Sodium Lauroyl Glutamate
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Antistatic agentHair conditioningSurfactant
Coco-Betaine
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Antistatic agentHair conditioningSkin conditioningSufactantFoam boostingViscosity increasing agentViscosity controlling
Disodium Laureth Sulfosuccinate
Sufactant, Foam boosting
Low-hazard ingredient.Read moreShow less
EWG 2 CIR B SufactantFoam boostingHydrotropeFoaming
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
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
Sodium Methyl Oleoyl Taurate
Antistatic agent, Cleansing
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Antistatic agentCleansingFoamingSurfactant
Decyl Glucoside
Cleansing, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingEmulsion stabilisingSurfactant
Bis-Aminopropyl Diglycol Dimaleate
Hair conditioning, Hair waving or straightening
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningHair waving or straighteningSkin conditioning
Coco-glucoside
Cleansing, Foaming
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingFoamingSurfactant
Lauryl Glucoside
Cleansing, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingSurfactant
Chlorphenesin
Cosmetic biocide, Antimicrobial
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Cosmetic biocideAntimicrobialPreservative
+ 19 more — see the full ingredients list above
Sodium Lauryl Sulfoacetate
Cleansing, Foaming
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A CleansingFoamingSurfactant Sulfate
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning Good for Dry Skin
Benzoic Acid
Fragrance, Ph adjuster
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A FragrancePh adjusterPreservativeBulking agentMasking Bad for Sensitive Skin
Sodium PCA
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningHumectantAntistatic agentSkin conditioning Good for Dry Skin
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
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
Limonene
Deodorant, Perfuming
Moderate-hazard ingredient.Read moreShow less
EWG 6 DeodorantPerfumingSolvent Allergens

How to use

How to use

  • 1 Morning & evening: Suitable for both AM and PM use.

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

Trust & honesty

Officially notified as a cosmetic in Malaysia (NPRA). Government registration record.

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