Brand new never used. Dr. Denese Wrinkle Eraser Serum Stick Targeted Wrinkle Treatment Stick Wrinkle Eraser Serum stick is a hydrating serum stick from Dr. Denese. It can be used around the mouth, lips, nasolabial folds, and forehead. This moisturizing formula helps to visibly soften the look of skin. Use under or over makeup to hydrate and soften the appearance of the face. How do I use it: Apply to areas during the day, under or over makeup, as well as at night, as often as needed.