SilDerm contains the same surgically approved silicone ingredients as Scar Gel and Scar Spray, but has the added benefit of a roller ball to apply the treatment. Scar Gel works by bonding to the outer layer of the skin providing a protective barrier against chemical, physical and microbial contamination of the scar site. The gel dries rapidly to form an ultra-thin gas permeable and waterproof silicone membrane, which allows the skin underneath to breath, and the scar to mature naturally through normal collagen synthesis.