Now you don't have to choose between healthy looking skin & a big night out with the Lab Series Instant Skin Booster, a high tech serum that makes tired looking skin look & feel refreshed. By employing a two-pronged 'inside & outside' approach, skin looks healthy & feels invigorated For use: Before, during, or after a big day/long night & use the Lab Series Instant Skin Booster you'll be good to go.