Glycerin, aloe, lanolin, and aloe vera are all common cosmetic ingredients. Glycerin is an odorless, colorless, viscous liquid that is used as a humectant in many cosmetics. Aloe is a plant extract that is known for its moisturizing and healing properties. Lanolin is a wax derived from sheep's wool that is used to soften and protect skin. Aloe vera is a species of aloe that is widely used in cosmetics due to its anti-inflammatory and antioxidant properties.