Our collagen spray contains glycerin, 1, 2-hexadiol. It can increase skin elasticity, reduce melanosis, hydrate and moisturize. The way to use it is very simple: 1. Clean the facial skin first. 2. Apply the collagen to your face and spread it out. 3. Use serum spray and spray it 15cm away from your face. 4. After the serum patch dissolves, gently pat your face to allow it to absorb. It can also enhance skin elasticity and promote radiance.