Collagen Eye Our collagen water-soluble spray contains glycerin, 1,2-hexanediol. It can increase skin elasticity, reduce melanin deposition, hydrate and moisturize. Its usage is simple: 1. Clean the facial skin first. 2. Apply the collagen membrane to the face and spread it out. 3. Use essence spray on the face 15 cm away. 4. After the essence paste is dissolved, gently pat the face for absorption. And it can enhance skin elasticity and promote radiance.