The research isn’t definitive, but this supposition seems to make sense. “Oily skin may fend off wrinkles more easily because it tends to be thicker, which affords more natural protection against sun damage,” says Brandt. Ruthie Harper, an internist in Austin, Texas, ties the phenomenon to hormones. “Women with oily skin may have higher testosterone levels,” she says, “which can help protect against diminished collagen levels and, in turn, wrinkles.” But this is not to say that oil-prone skin doesn’t ever look old. And factors such as sun exposure and smoking speed up the aging process and cause wrinkles, regardless of skin type.