Tegaderm consists of a thin film backing with a non-latex, hypoallergenic adhesive. The dressing is breathable, allowing good oxygen and moisture vapor exchange. It is waterproof and impermeable to liquids and bacteria. An intact dressing protects the site from outside contamination. Tegaderm transparent dressings can be used to cover and protect catheter sites and wounds, to maintain a moist environment for wound healing, as a secondary dressing, as a protective cover over at-risk skin, to secure devices to skin and as a protective eye covering.