Liquid Preparation is a term used to describe any type of product that is in liquid form and is used for a variety of purposes. The most common example of this is LOTION, which is a topical cream or ointment used to moisturize and protect the skin. It is usually made from a combination of oils, water, and other ingredients such as fragrances, preservatives, and emulsifiers. Lotions are available in a wide range of textures and forms, from light and creamy to thick and greasy.