Our collagen astaxanthin Tilaan bottle contains collagen, astaxanthin, and niacinamide. It can nourish the skin evenly, reduce stain precipitation, fade stains, promote cell renewal, and make the skin smoother and more beautiful. Its use method is very simple: first open the lid, insert the dose tube into the bottle, lift the bottle up and down, remove the serum as required, then place the bottle on the table, pull out the dose tube, apply the serum to the face, and then insert the dosing tube into the bottle and lay it flat. After use, it brightens skin, strengthens skin, improves texture, activates cell absorption, gently nourishes, moisturizes and brightens your skin.