Cocoa butter is high in fatty acids, which is why it's often touted for its ability to hydrate and nourish the skin and improve elasticity. The fat in cocoa butter forms a protective barrier over the skin to hold in moisture. Cocoa butter is also rich in natural plant compounds called phytochemicals. These substances may improve blood flow to the skin and slow skin aging by protecting against damage from the sun's harmful UV rays. One common use of cocoa butter is to smooth scars, wrinkles, and other marks on the skin. Many women believe cocoa butter creams and lotions can be used during and after pregnance to prevent and minimize the appearance of stretch marks. Cocoa butter has also been promoted to heal rashes from conditions like eczema and dermatitis.