Deep Hydration Hair Mask

Only Curls

Where to buy Possibly in stock

About this product

The Only Curls Deep Hydration Hair Mask is a misc. Our analysis of its 42 ingredients (26 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
42
Low-risk
26
Fragrance
Contains fragrance
Origin
United Kingdom

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 8/3
Good for dry skin
Cetyl Alcohol Stearyl Alcohol Argania Spinosa Kernel Oil Caprylic/Capric Triglyceride Glycerin Propylene Glycol Lactic Acid Opuntia Ficus-Indica Seed Oil
Caution for dry skin
Cetyl Alcohol Stearyl Alcohol Glycerin
Oily/Acne-Prone Skin No data
Sensitive Skin 1/16
Good for sensitive skin
Glycerin
Caution for sensitive skin
Nasturtium Officinale Extract Cetyl Alcohol Sodium Citrate Stearyl Alcohol Caprylic/Capric Triglyceride Glycerin Propylene Glycol Citric Acid Sodium Benzoate Sorbic Acid Potassium Sorbate Lactic Acid Linalool Limonene Benzyl Benzoate Coumarin

Ingredients list

42 total
Lower hazard (1) Higher hazard (7)
All42 Skin Conditioning20 Fragrance17 Masking9 Hair Conditioning8 Solvent7 Perfuming7 Humectant6 Antistatic Agent5
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
Shea Butter Ethyl Esters
(Skin Conditioning, Skin Conditioning Emollient)
1
A
Cetyl Alcohol
(Emulsion Stabilising, Fragrance, Opacifying, Emulsifying, Surfactant, Foam Boosting, Viscosity Increasing Agent, Emollient, Masking, Viscosity Controlling)
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
Cocos Nucifera Fruit Extract
(Hair Conditioning, Skin Conditioning, Skin Conditioning Emollient)
3
B
Behentrimonium Chloride
(Antistatic Agent, Hair Conditioning, Preservative)
1
A
Argania Spinosa Kernel Oil
(Emollient, Skin Conditioning)
Fungal Acne
Fungal Acne Trigger
cocos nucifera oil
(Fragrance, Hair Conditioning, Perfuming, Skin Conditioning)
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
Opuntia Ficus-Indica Seed Oil
(Emollient)
PPG-3 Caprylyl Ether
(Foam Boosting, Solvent)
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
Ricinus Communis Seed Oil
(Fragrance, Perfuming, Skin Conditioning)
1
A
Stearyl Alcohol
(Emulsion Stabilising, Fragrance, Emulsifying, Surfactant, Foambooster, Viscosity Increasing Agent, Emollient, Foam Boosting, Masking, Opacifying, Refatting, Viscosity Controlling)
PARFUM
(Fragrance, Perfuming)
1
Dipalmitoylethyl Hydroxyethylmonium Methosulfate
(Antistatic Agent, Detangling, Hair Conditioning)
1
A
Guar Hydroxypropyltrimonium Chloride
(Antistatic Agent, Hair Conditioning, Viscosity Increasing Agent, Film Forming, Skin Conditioning, Viscosity Controlling)
Behenamidoethyl Diethylamine
(Hair Conditioning)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
Ficus Carica Fruit Extract
(Humectant)
3
A
Polyquaternium-7
(Antistatic Agent, Film Forming, Hair Fixing)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
3
A
Potassium Sorbate
(Fragrance, Preservative)
1
B
Hydrolyzed Wheat Protein
(Film Forming, Hair Conditioning, Skin Conditioning, Antistatic Agent)
6
Limonene
(Deodorant, Perfuming, Solvent)
Allergens
Allergens
Helianthus Annuus Seed Oil
(Fragrance, Skin Conditioning, Skin Conditioning Emollient)
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
6
A
Benzyl Benzoate
(Fragrance, Solvent, Antimicrobial, Masking)
Allergens
Allergens
1
Saccharomyces/Copper Ferment
(Skin Conditioning)
2
Saccharomyces/Iron Ferment
(Skin Conditioning)
1
Saccharomyces/Magnesium Ferment
(Not Reported)
1
Saccharomyces/Silicon Ferment
(Skin Conditioning)
3
Saccharomyces/Zinc Ferment
(Skin Conditioning)
7
Coumarin
(Fragrance, Masking)
Allergens
Allergens
1
Leuconostoc/Radish Root Ferment Filtrate
(Antidandruff Agent, Antimicrobial)
5
Linalool
(Fragrance, Deodorant, Masking)
Allergens
Allergens
1
A
Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking)
1
Nasturtium Officinale Extract
(Perfuming, Skin Conditioning)
1
Tropaeolum Majus Extract
(Antimicrobial, Skin Conditioning, Tonic)
1
A
Trisodium EDTA
(Chelating Agent)
3
A
Sorbic Acid
(Fragrance, Preservative)

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

Shea Butter Ethyl Esters
Skin Conditioning
Cetyl Alcohol
Emollient
Caprylic/Capric Triglyceride
Emollient, Skin Conditioning
Cocos Nucifera Fruit Extract
Skin Conditioning
Argania Spinosa Kernel Oil
Emollient, Skin Conditioning
cocos nucifera oil
Skin Conditioning

Benefits

Good for dry skin

Concerns

Contains eu allergen
Not fungal acne (malassezia) safe
Coumarin — 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
Shea Butter Ethyl Esters
Skin conditioning, Skin conditioning - emollient
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningSkin conditioning - emollient
Cetyl Alcohol
Emulsion stabilising, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingFragranceOpacifyingEmulsifyingSurfactantFoam boostingViscosity increasing agentEmollientMaskingViscosity controlling
Caprylic/Capric Triglyceride
Emollient, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientMaskingPerfumingSkin conditioningSolvent
Cocos Nucifera Fruit Extract
Hair conditioning, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningSkin conditioningSkin conditioning emollient
Behentrimonium Chloride
Antistatic agent, Hair conditioning
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Antistatic agentHair conditioningPreservative
cocos nucifera oil
Fragrance, Hair conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceHair conditioningPerfumingSkin conditioning
Opuntia Ficus-Indica Seed Oil
Emollient
Limited public safety data.Read moreShow less
EWG N/A Emollient
PPG-3 Caprylyl Ether
Foam boosting, Solvent
Limited public safety data.Read moreShow less
EWG N/A Foam boostingSolvent
Ricinus Communis Seed Oil
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfumingSkin conditioning
Stearyl Alcohol
Emulsion stabilising, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingFragranceEmulsifyingSurfactant- foamboosterViscosity increasing agentEmollientFoam boostingMaskingOpacifyingRefattingViscosity controlling
PARFUM
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfuming
Dipalmitoylethyl Hydroxyethylmonium Methosulfate
Antistatic agent, Detangling
Low-hazard ingredient.Read moreShow less
EWG 1 Antistatic agentDetanglingHair conditioning
Guar Hydroxypropyltrimonium Chloride
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningViscosity increasing agentFilm formingSkin conditioningViscosity controlling
Behenamidoethyl Diethylamine
Hair conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioning
+ 18 more — see the full ingredients list above
Argania Spinosa Kernel Oil
Emollient, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientSkin conditioning Fungal-acne trigger
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
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
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
Limonene
Deodorant, Perfuming
Moderate-hazard ingredient.Read moreShow less
EWG 6 DeodorantPerfumingSolvent Allergens
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
Benzyl Benzoate
Fragrance, Solvent
Moderate-hazard ingredient.Read moreShow less
EWG 6 CIR A FragranceSolventAntimicrobialMasking Allergens
Coumarin
Fragrance, Masking
Higher-hazard ingredient.Read moreShow less
EWG 7 FragranceMasking Allergens
Linalool
Fragrance, Deodorant
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceDeodorantMasking Allergens

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