Defy time with the guerlain tenue de perfection foundation a formula for long and flawless wear tenue de perfection offers ultimate lasting perfection for up to 16 hours in a sublime adaptable liquid foundation smooth even toned and velvety skin appears corrected and impeccable and is protected with an spf of 20 the innovative formula from guerlain is made with a timeproof complex a collaboration of two soft focus micro powders to smooth the complexion and soften imperfections