hot melt collagen mask 1.muti-functions 2.thin&soften face skin 3.firming,anti aging 4.replenish collagen for daiy ... by skin more effectively ,the mask changes from thick to thin obviously. 2).Secondly, pasted more easily and conveniently. Because ... & crystal masktextureRough,easy to leave marks and wrinkles on face watering,fine,clear and transparent,nice lookingdegree of comfortloosening,leaking ...