Did you know there are 4 main types of wrinkles? (1) Expression wrinkles—these are the lines that form when our face is frequently pulled into certain expressions due to movement of facial muscles. E.g., laugh lines, frown lines, etc. (2) Elastotic wrinkles—are wrinkles caused by over exposure to the sun, which result in loss of skin elasticity. (3) Compression wrinkles—are formed during sleep if you sleep on your face. (4) Atrophic wrinkles—are formed due to aging issues, such as a loss of collagen or thinning of skin.