
Image: cosrx.com
COSRX
AC Collection Blemish Care Sheet Mask
A mask built around Niacinamide, for hydration and pollution defence.
Brand price
USD 6.99 · 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
- Acne & blemishes
- Dark spots & pigmentation
How to use
Apply this mask evenly on your face. After 15 to 20 minutes, remove the mask and gently pat to absorb the remaining essence. *For external use only. Do not get into eyes.
Caution
*For external use only. Do not get into eyes.
What's inside
Ingredients List
4 trigger at least one check · 22 trigger none
- Niacinamide
- Acne Fighting
- Barrier Repair
- Brightening
- Dark Spots
- Even Tone
- Oil Control
- Pore Refining
- Redness Reducing
Key Ingredients
Centella asiatica (Cica)3
Centella asiatica (cica), used to calm irritation.
Benefits
Hydrating6
Boosts hydration and relieves dry, tight skin.
Butylene Glycol, Caprylic/Capric Triglyceride, Dipotassium Glycyrrhizate, Ectoin, Glycerin, Propanediol
Barrier Repair5
Strengthens and restores the skin's natural barrier.
Allantoin, Caprylic/Capric Triglyceride, Glycerin, Melaleuca Alternifolia Leaf Oil, Niacinamide
Reduces Irritation5
Eases discomfort and supports skin resilience.
Allantoin, Asiatic Acid, Asiaticoside, Dipotassium Glycyrrhizate, Madecassic Acid
Redness Reducing5
Soothes visible redness and calms irritation.
Allantoin, Asiatic Acid, Asiaticoside, Madecassic Acid, Niacinamide
Acne Fighting2
Helps clear breakouts and keep pores clear.
Antioxidant4
Shields skin from free radical damage.
Arbutin, Asiaticoside, Hydroxyacetophenone, Melaleuca Alternifolia Leaf Oil
Anti-Pollution6
Helps defend against airborne pollutants.
Allantoin, Arbutin, Asiaticoside, Glycerin, Hydroxyacetophenone, Melaleuca Alternifolia Leaf Oil
Concerns
May Worsen Seborrheic Dermatitis3
May feed the yeast involved in seborrheic dermatitis.
Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Polyglyceryl-10 Laurate, Polyglyceryl-10 Myristate
May Worsen Keratosis Pilaris1
May clog follicles or strip skin prone to keratosis pilaris.
May Worsen Eczema1
May worsen itching or irritation for eczema-prone skin.
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 →Butylene Glycol
Fragrance, Humectant, Skin Conditioning, Solvent, Viscosity Controlling
Butane-1,3-diol (CAS No. 107-88-0/ EC No. 203-529-7) (R)-(-)-butane-1,3-diol” (CAS No. 6290-03-5/ EC No. 228-532-0)
Learn more about Butylene Glycol →Glycerin
Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care, Perfuming, Humectant, Skin Protecting, Solvent, Viscosity Controlling
Glycerin may be plant, synthetic or animal depending on the supplier.
Learn more about Glycerin →Propanediol
Solvent, Viscosity Controlling
Propanediol is the organic compound that conforms to the formula
Learn more about Propanediol →Niacinamide
Smoothing
Niacinamide is niacinamide.
Learn more about Niacinamide →Melaleuca Alternifolia Leaf Extract
Perfuming, Skin Conditioning, Skin Conditioning
Melaleuca Alternifolia Leaf Extract is is an extract of the leaves of the Tea Tree, Melaleuca alternifolia, Myrtaceae
Learn more about Melaleuca Alternifolia Leaf Extract →1,2-Hexanediol
Skin Conditioning, Solvent
We don't have a description for 1,2-Hexanediol yet.
Learn more about 1,2-Hexanediol →Hexylene Glycol
Perfuming, Skin Conditioning, Solvent, Cleansing, Emulsifying
2-Methylpentane-2,4-diol
Learn more about Hexylene Glycol →Hydroxyacetophenone
Antioxidant
Hydroxyacetophenone is the organic compound
Learn more about Hydroxyacetophenone →Hydroxyethylcellulose
Binding, Emulsion Stabilising, Film Forming, Light Stabilizer, Viscosity Controlling
Cellulose, 2-hydroxyethyl ether
Learn more about Hydroxyethylcellulose →
Dupes
- COSRX Advanced Snail Mucin Power Sheet Mask76% match
- Skin1004 Tone Brightening Glow Mask74% match
- Skin1004 Tea-Trica Relaxing Mask73% match
- Medicube Super Cica Calming Mask71% match
- Medicube Deep Vita C Daily Quick Masks71% match
- Medicube PDRN Pink Vita Coating Sheet Mask70% match