Our hyaluronic acid Roller serum contains hyaluronic acid, hydrolyzed collagen, glycerin. It penetrates deep into the skin and locks in moisture, leaving skin hydrated and smooth for a long time. After application, your skin will immediately feel hydrated and plump, with reduced fine lines and a healthy glow. Its application method is very simple: 1. First thoroughly clean and dry the skin; 2. Open the cap of the hyaluronic acid serum bottle and install the 64-needle roller head on the top of the serum bottle; 3. Roll the wheel on the skin surface to spread the microneedles all over the facial skin. Use for 15-20 minutes at a time. Microneedles stimulate collagen production, improve skin elasticity, reduce wrinkles and sagging.