Emollients are substances that soften and moisturize the skin and decrease itching and flaking. Some products (e.g., zinc oxide, white petrolatum) are used mostly to protect the skin against irritation (e.g., from wetness). Dry skin is caused by a loss of water in the upper layer of the skin.

Application

Vaseline is the original, name brand for petroleum jelly. Theoretically, there is no difference between the name brand and generic brands.