A wrinkle is a cutaneous breakage caused by the reduction in two proteins that are vital for skin elasticity: collagen and elastin; The appearance of wrinkles is caused by internal factors (genetic, hormonal, stress) as well as external (sun, alcohol, tobacco, diet…). There are many types of wrinkles, all named according to their location: expression lines, crow’s feet, nasolabial folds, etc. Fine lines are small, shallower wrinkles that appear sooner. They are typically located around the eyes and caused by a lack of skin moisturising for example.