COSRX AHA/BHA Clarifying Treatment Toner

COSRX

COSRX AHA/BHA Clarifying Treatment Toner

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About this product

The COSRX AHA/BHA Clarifying Treatment Toner is a toner. Our analysis of its 12 ingredients (10 low-risk) rates it Excellent (96/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Toners
Ingredients
12
Low-risk
10
Fragrance
Fragrance-free
Origin
South Korea
Data updated
Jun 2026

The evidence

Quick Product Notes

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

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 2/0
Good for dry skin
Butylene Glycol Sodium Lactate
Oily/Acne-Prone Skin 2/0
Good for oily/acne-prone skin
Betaine Salicylate Salix Alba (Willow) Bark Water
Sensitive Skin 1/3
Good for sensitive skin
Allantoin
Caution for sensitive skin
Pyrus Malus (Apple) Fruit Water Butylene Glycol Ethyl Hexanediol

Ingredients list

12 total
Lower hazard (1) Higher hazard (4)
All12 Skin Conditioning5 Solvent4 Fragrance3 Exfoliant3 Masking2 Humectant2 Buffering Agent2 Keratolytic2
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Mineral Water
Salix Alba (Willow) Bark Water
1
B
Pyrus Malus (Apple) Fruit Water
(Fragrance, Masking)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
A
1,2-Hexanediol
(Solvent)
3
B
Sodium Lactate
(Buffering Agent, Exfoliant, Humectant, Keratolytic)
4
B
Glycolic Acid
(Exfoliant, Ph Adjuster, Buffering Agent)
Good for Oily Skin
Good for Oily Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Water
(Solvent)
1
Betaine Salicylate
(Antimicrobial Agent, Exfoliant, Keratolytic)
1
A
Allantoin
(Skin Conditioning, Skin Protecting, Soothing)
Good for Oily Skin
Good for Oily Skin
Good for Sensitive Skin
Good for Sensitive Skin
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
3
A
Ethyl Hexanediol
(Fragrance, Solvent)

My Ingredient Notes

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Key ingredients

Butylene Glycol
Skin Conditioning, Humectant
Sodium Lactate
Exfoliant, Humectant
Glycolic Acid
Exfoliant
Betaine Salicylate
Exfoliant
Allantoin
Skin Conditioning, Skin Protecting
Panthenol
Skin Conditioning

Benefits

Fungal-acne (Malassezia) safe
Good for dry skin
Good for oily/acne-prone skin

Concerns

May not suit sensitive skin

Ingredients explained

Mineral Water
Other
Low-hazard ingredient.Read moreShow less
EWG 1
Salix Alba (Willow) Bark Water
Other
Limited public safety data.Read moreShow less
EWG N/A
Pyrus Malus (Apple) Fruit Water
Fragrance, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B FragranceMasking
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Sodium Lactate
Buffering agent, Exfoliant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Buffering agentExfoliantHumectantKeratolytic
Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Betaine Salicylate
Antimicrobial agent, Exfoliant
Low-hazard ingredient.Read moreShow less
EWG 1 Antimicrobial agentExfoliantKeratolytic
Ethyl Hexanediol
Fragrance, Solvent
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A FragranceSolvent
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Glycolic Acid
Exfoliant, Ph adjuster
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B ExfoliantPh adjusterBuffering agent Good for Oily SkinBad for Sensitive Skin
Allantoin
Skin conditioning, Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSkin protectingSoothing Good for Oily SkinGood for Sensitive Skin
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning Good for Dry Skin

How to use

How to use

  • 1 Where it fits: Use right after cleansing, before serums.
  • 2 Evening, start slow: Best in the PM a few times a week to begin with; avoid layering with other strong actives the same night.
  • 3 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

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

Pregnancy & breastfeeding

Contains ingredients some choose to avoid or double-check while pregnant or nursing.

Use with caution
BHA (salicylic) (Betaine Salicylate)

Low-strength topical salicylic acid (BHA) is generally considered fine. Caution is usually reserved for high-strength leave-on products and salicylic peels.

This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.

Effective levels — general guide

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

BHA (salicylic) 0.5–2%

Salicylic acid is OTC-capped at 2%; 0.5–2% is the usual leave-on range. Much below that it acts more as a soothing agent than an exfoliant.

Betaine Salicylate

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.

Glycolic 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.

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