Our niacinamide serum contains snow leaf water, niacinamide, collagen. It can quickly relieve dry skin and leave skin soft and moist. The way to use it is simple: open the lid. Insert the attached needle into the bottle, absorb the appropriate amount of essence, and evenly apply the essence to the face. When you're done, put the needle back in place and store it flat. It can effectively improve loose skin and create a firm and full facial contour.