One night is what it takes to start looking younger. Inspired by the science of cellular regeneration, Estee Lauder takes you to a younger time zone overnight. Every single woman tested woke up to smoother, more hydrated skin. Exclusive Sirtuin EX1 Technology gives you a more lineless, radiant & rested look. Helps support skin's natural nightly collagen production. Use it with Time Zone day creme & look younger. Your time is now. To use: Apply evenings to the cleansed face after serum.