Mederma Silicone Scar Sheet provides a semi-occlusive layer on top of the skin that softens and visibly improves the appearance of new and old scars in as little as 4 weeks. The breathable silicone technology of this scar sheet results in increased hydration of the skin, ensuring that the damaged, scarred skin recovers more quickly and that problems caused by the scar are reduced. Each Mederma silicone scar sheet is 1.4 inches by 3 inches and can be reused for up to 21 days with proper care. It is essential to clean the Mederma Silicone Scar Sheet properly, on a daily basis. This is necessary to ensure good adhesion. For best results, it is important to carefully follow all usage and maintenance instructions in the product leaflet. Guaranteed results or your money back.