Lotion play is a subset of the better known wet-and-messy fetish (WAM), which typically involves participants using food (such as pudding or whipped cream), mud, or paint as a lubricant to facilitate sexual activity. Lotion play uses lotion specifically for this purpose. Lotion is available in concentrated form, to be added to hot water. A one-gallon concentrate will typically yield 6-10 gallons of lotion (J-Lube Lotion Concentrate). The main component in most lotion is polyacrylate. A similar effect can be achieved by dissolving powdered methyl cellulose in water.