COSRX Master Patch Original Fit 24 treats and protects blemishes using hydrocolloid patches for faster clearer looking skin. A classic hydrocolloid acne patch designed to protect active breakouts and support faster healing. These patches create a protective barrier that absorbs excess fluid while shielding the skin from bacteria and irritation. Designed for overnight or extended wear to visibly reduce blemish size and redness. With consistent use, spots appear calmer and skin is protected from picking and scarring.