A sheet mask for blemish prone skin. Give acne prone skin a break with COSRX’s AC Collection Blemish Care Sheet Mask. The sheet mask has been designed to calm stressed skin while helping to brighten dark and red acne scars for skin that feels like its best self. Enriched with tea tree extract to soothe and relieve breakouts; niacinamide and ectoine to brighten and moisturise; while the naturally derived cellulose 3 layer sheet helps to deliver the active ingredients deep into the skin.