As Marmon hinted, crepey skin primarily results from sun exposure. “A frequent misunderstanding is that crepey skin develops solely from aging, but lifestyle factors like sun exposure and smoking are significant contributors,” she said. “While everyone is susceptible to crepey skin, people with lighter skin tones, who are more prone to sun damage, are particularly at risk.”
Sun exposure causes the skin to lose volume due to dehydration. “It doesn’t store water the same because the integrity of the skin is damaged,” board-certified dermatologist Dr. Shani Francis told HuffPost. That leads to degradation of collagen and elastin, the proteins that hold water and therefore help the skin keep its structure.
Any ultraviolet exposure, even from tanning beds, can lead to the formation of crepey skin. “It’s really not the sun itself — it’s ultraviolet radiation,” Francis explained. “Any type of ultraviolet radiation exposure is going to damage and degrade the collagen and the elastin tissues.”
Genetics play a factor, too. “If you look at your parents, if they have crepey skin, you know you need to start the process of preventing a little bit earlier,” Francis said.
According to Marmon, many women begin to notice crepey skin around the time they hit menopause because the drop in estrogen during that time speeds up the decrease in collagen and elastin, resulting in a thinning of the skin with a loss of moisture and fat.
“It starts around middle age and gets worse as we age,” Francis reiterated. “The elastic fibers, they start off very strong. Twenty-something-, 30-something-year-olds, their skin snaps right back. Once you get to 40, it doesn’t quite work that way.”
Board-certified dermatologist Dr. Noëlle S. Sherber told HuffPost that crepey skin from UV damage usually shows up around the eyes, the chest and the backs of the hands. Some people also see it above the knees and on the inner arms.