Get the perfect customised glow with the Guerlain Terracotta Sun Serum Tan Booster Complex, a luxurious way to prolong your tan. Created to activate, intensify & prolong your tan, this tactile serum ensures a natural-looking glow all year round. Its unique formula has a dual action, prolonging your tan by stimulating melanin production & also moisturising skin to ensure your glow lasts for longer. For use on the face, apply 2 drops of serum to your preferred moisturiser & blend with your fingertips. Apply to the face & neck. For use on the body, apply 4 drops of serum to your favourite skincare product & apply to the whole body.