What Else You Need to Know: Meet the secret to an extra-deep tan that lasts for days. This hydrating mousse has several superpowers, including a fast-drying formula, the ability to replicate a European tan, and a fresh blood orange scent. The color may begin developing within two hours and will continue to develop for the next eight hours. Clean at Sephora Our commitment to offering formulas that go beyond regulatory standards to avoid controversial ingredients without sacrificing effectiveness.