Apply to the under eye area when you're feeling like you need a boost. You will feel an instant cooling sensation as the mask begins to hydrate, depuff and help erase the look of dark circles. Keep on for 10 minutes (or longer). Gentle enough to be used daily. If you want extra depuffing, stick these babies in the fridge to get them nice & chilly. To reuse, place eye mask back into the tray and pop the tray into the packet to avoid air getting in. You can put a few drops of your favorite hydrating serum to keep them hydrated. Can we used 2-4 times.