COSRX Clear Fit Master Patch is an ultra-thin hydrocolloid acne patch designed for discreet daytime use. Each package contains 18 patches (10mm x 18ea) that effectively treat breakouts while being nearly invisible on the skin, even under makeup. Key features: • Invisibly thin design • Suitable for daytime use • Acts as a protective barrier • Non-drying formula • 18 patches per pack • 10mm size patches The patches are made with Somadermspot-S hydrocolloid material that helps extract impurities while maintaining a moist environment for optimal healing. The gradient, matte finish makes them barely noticeable on skin. They can be worn during the day and are compatible with makeup application. For best results, apply to clean, dry skin before other skincare products.