"Oh, look, you have a six-pack now!" my lovely tan lady always says whenever I go in for a spray. If you don't have the time to book an appointment but need an instant glow, never fear — there are plenty of lotions that impart a safe one. Isle of Paradise Disco Tan Instant-Wash Off Bronzer ($22) lasts for just one shower, so it's a great in-a-pinch product.