As we get older, our skin can get loose and thin like paper or crepe. Amy Kassouf, MD, a dermatologist from Cleveland Clinic says that the main reason for crepey skin is not age. She mentioned that crepey skin is commonly caused by sun damage and unlike wrinkles which is caused by recurrent muscle movement, crepey skin is caused by sunlight which breaks down the fibers in the skin making it stretch. When the fibers is damaged, it will heal over time, but they would eventually end up losing the ability to heal fully when there is too much sun exposure. Crepey skin is common for people at the age of 40 but it can affect people as young as 20 if chronic tanning beds are regularly used. It can also be caused by massive weight loss and medication.