The rejuvenator. Our highly effective overnight creams repair your skin while you sleep with carefully calibrated measures of retinol - the single most powerful, proven, and effective ingredient in the battle against visible aging or a night out on the town. A fancy name for vitamin A, retinol increases cell turnover and stimulates protein production to actively reduce, puffiness, fine lines and wrinkles. We aren't kidding when we say it's powerful, so we make sure you're getting the right dose for you and your skin. If you're not using it, you should be - and with Geologie you will be.