Spenco 2nd Skin Squares protect against blisters. Made primarily from water to cool and soothe skin on contact these dressings will not stick to the skin. Squares are non-irritating and odorless providing instant relief. They also protect and cushion areas where you need it most from skin pressure rubbing chafing and blisters. To use simply cut Squares to desired size and remove the blue backing before applying the gel to the skin. If the hydrogel skin dries on the skin simply soak it in water before removing it. Spenco 2nd Skin Squares should be changed daily.