3 in 1 Self-Tanning Sunshine Drops Custom Golden Glow, Radiance, hydration The Tan Flash Serum is the ultimate 3-in-1 self-tanner to gradually develop a custom golden glow. Concentrated in hyaluronic acid and black tea extract, it rehydrates, replumps and restores radiance to the skin. This intelligent serum provides a quick and non-Sticky application. A naturallooking and even complexion without the harmful effects of the sun.