COSRX Standards: Clean Beauty - All COSRX products are formulated with skin-friendly ingredients that alleviate irritation. It is Hypoallergenic, Dermatologist tested, Parabens FREE, Sulfates FREE, Phthalates FREE. The Perfect Shape and Size: Oval shape to secure on to the contours of your face. Matte and broad tapered edge for seamless application. S size : 0.51" x 0.35" / M size: 0.62" x 0.43". Key Ingredient: Absorb the gunk out with the hydrocolloid patch and soothe with tea tree oil. Cover, Heal, and Clear: Revamped to actively treat your acne!. Not Your Average Acne Patch: Comfortable spot treatment to solve your unplanned breakouts. Master Patch Intensive perfectly blends into any skin tone for discrete appearance.