White petroleum jelly is a white, slightly yellowish mineral wax. White petroleum jelly has the ability to nourish the skin, improve chapping, and help stop nasal bleeding. 1. Nourish skin: Vaseline can provide a protective barrier for the skin and has a moisturizing effect, suitable for dry and dehydrated skin. 2. Improve chapped skin: can improve the skin of the feet thick and hard, chapped, you can apply a slightly thick layer, wait until the next day you can find that the skin becomes a little softer. 3. Help nasal bleeding: in the dry weather nasal bleeding time, with a cotton swab dipped in a small amount of white petroleum jelly coated in the nasal cavity can relieve dryness, reduce bleeding. However, it should be noted that those who are allergic to white petroleum jelly should not use it.