Dynarex DynaShield Skin Protectant Barrier Cream is a zinc-based skin protectant, enriched with Aloe Vera and Vitamins A, D and E. DynaShield acts as a moisture barrier to protect and promote healthy skin, while treating and preventing rashes and dryness. The ointment forms a protective barrier on the skin to seal out wetness, reduce friction, and prevent chafed skin. This cream vanishes quickly after being absorbed into the skin and leaves no residue behind.