DIMINISHES DARK CIRCLES- under eye serum contains 5% caffeine and effective on the look of dark circles that caused by lack of sleep or staying up late. The recommended usage frequency is twice a day, once in the morning and once in the evening. HYDRATION EYE CREAM-eye cream contains hyaluronic acid, niacinamide, acetyl hexapeptide, Camellia Sinensis, and glutathione. It effectively smooths the appearance of fine lines and wrinkles, provides long-lasting hydration. CONVENIENT AND SIMPLE TO USE-The under eye serum is designed with an unique 360 cooling stainless steel roller-ball applicator, which works great when used in combination with our caffeine eye serum. The eye roller applicator can evenly distributes the eye serum around the eye area and provides a comprehensive massage of the eye contour. OPTIMAL ABSORPTION-Our Under Eye Serum has a moisturizing but refreshing texture. To achieve optimal absorption of nutrients, it is important to apply an appropriate amount of essence each time and use the unique cooling massage head and proper techniques to fit the skin around the eyes. This will help tighten the skin and provide long-lasting hydration without causing dryness.