Lotion play (ローションプレイ rōshon purei?), also known as gookkake, gluekkake, is a popular form of Japanese erotica and prostitution involving the use of copious amounts of sex lubricant which in the Japanese language is referred to as "lotion" (ローション). Typically it involves a participant rubbing lotion on another using their body, sexual intercourse in a pool or bath filled with lotion, or lotion being poured over the participants during sex. In Japan, lotion is available in concentrated form which can be added to hot water to produce the desired amount. The main component is polyacrylate. A similar effect can be achieved by dissolving powdered methyl cellulose in water.
- Talmadge, Eric. Getting Wet: Adventures in the Japanese Bath. Tokyo: Kodansha International, 2006, p. 187, 190–191. ISBN 978-4-7700-3020-7.
- Sinclair, Joan. Pink Box: Inside Japan's Sex Clubs, Harry N. Abrams, Inc., 2006, p. 112–113. ISBN 978-0-8109-9259-7.
- Page for a lotion product, listing acrylate as the main component (in Japanese)