
Image: cosrx.com
COSRX
The AHA 2 BHA 2 Blemish Treatment Serum
A spot treatment built around AHA and Glycolic acid, for hydration and smoothing.
Brand price
USD 23.00 · checked 25 Sept 2026 · on the brand's site
From the brand
What the brand says about this product. Our ingredient analysis follows below.
The brand recommends it for
- Oily skin
- Sensitive skin
- Acne & blemishes
- Uneven texture
How to use
1. Take out the cotton ball using the tongs included. 2. Gently tap a cotton ball directly onto target areas. *Depending on the area of concern, you may gently wipe the blackhead/whitehead on the nose and chin *For daytime use, please be sure to apply sunscreen.
What's inside
Ingredients List
1 trigger at least one check · 16 trigger none
- Fatty esters (glyceryl stearate, PEG-100 stearate)
- Polysorbates (Tween emulsifiers)
- May Worsen Seborrheic Dermatitis
- AHA
- Glycolic acid
- Anti-Aging
- Brightening
- Dark Spots
- Exfoliating
- Smoothing
Key Ingredients
Hyaluronic acid1
Hyaluronic acid and its salts; a humectant that binds water to the skin.
Benefits
Hydrating5
Boosts hydration and relieves dry, tight skin.
Dipotassium Glycyrrhizate, Gluconolactone, Propanediol, Sodium Hyaluronate, Zinc PCA
Reduces Irritation3
Eases discomfort and supports skin resilience.
Exfoliating3
Lifts dead surface cells to smooth texture.
Concerns
May Worsen Seborrheic Dermatitis1
May feed the yeast involved in seborrheic dermatitis.
Ingredients Explained
Click on any ingredient to learn more about it
Water
Antiplaque, Skin Conditioning, Solvent
Aqua (EU),Deionized Water,Distilled Water,Micromatrix Fractile AN,Onsen-Sui (JPN),Purified Water
Learn more about Water →Propanediol
Solvent, Viscosity Controlling
Propanediol is the organic compound that conforms to the formula
Learn more about Propanediol →Polysorbate 20
Cleansing, Emulsifying
Polysorbate 20 isn't fungal acne safe.
Learn more about Polysorbate 20 →Glycolic Acid
Buffering
Glycolic Acid is an AHA.
Learn more about Glycolic Acid →Salicylic Acid
Anti-seborrheic, Fragrance, Hair Conditioning, Keratolytic, Preservative, Skin Conditioning
Salicylic Acid is a BHA.
Learn more about Salicylic Acid →Gluconolactone
Chelating, Skin Conditioning
Gluconolactone is a PHA.
Learn more about Gluconolactone →Zinc PCA
Humectant, Skin Conditioning
Zinc PCA is a zinc salt.
Learn more about Zinc PCA →Allantoin
Skin Conditioning, Skin Protecting, Soothing
Urea, (2,5-dioxo-4-imidazolidinyl)-
Learn more about Allantoin →Sodium Hyaluronate
Humectant, Skin Conditioning
Sodium Hyaluronate is a hyaluronic acid.
Learn more about Sodium Hyaluronate →Sodium Hydroxide
Buffering, Denaturant
Sodium hydroxide
Learn more about Sodium Hydroxide →
Dupes
- CeraVe Acne Control Gel62% match
- VT Cosmetics Garlic AC Reedle shot Point Patch61% match
- Skin1004 Tea-Trica Spot Cream60% match
- Purito Timeless Bloom Retinol Spot Cream60% match
- Anua Triple Acid Spot Care Microdart Patch60% match