Here are some common  used in cosmetics: 1. Oils and Fats- Natural Oils: Olive oil, coconut oil, and jojoba oil are used for their moisturizing properties and ability to create a barrier that prevents water loss.- Synthetic Esters: Compounds like isopropyl palmitate and isostearyl neopentanoate are used for their smooth texture and ability to penetrate the skin. 2. Alcohols- Ethanol: Often...