What It Is:Instantly cooling rollerball refreshes on contact. What It Does:Brightens eye area over time. The fast-drying hydrating serum can be layered over or under makeup. Oil-free. Ophthalmologist Tested. How To Use:Use twice a day, morning, and night.Using gentle pressure, roll under each eye from inner corner to outer corner twice.The user finger to smooth in any excess until absorbed.Reapply as needed throughout the day. TIPS:Can be used alone, or under or over makeup.Can be layered with other eye treatment products.