The formula of L' Oréal Paris Studio Pro Curve It Curl Mousse gives you curl definition for up to 48H*. Unlimited styling opportunities, for the wave riders & curl creators. Who do you want to be today? Try a new look every day; go from Poker Straight on Monday, to Hippie on Wednesday then to Backcomb Bombshell on Friday. With Studio Pro & the exclusive Double-Hold formula, change up your styling routine! * Instrumental test vs. reference shampoo.