Separate skin care products for the body and face exist for good reason, according to dermatologist Lauren Fine, MD, of Chicago Cosmetic Surgery and Dermatology in Illinois. “Facial skin can be much more sensitive than body skin. It contains more oils glands and different types of vasculature,” Fine said. “Facial skin is also much thinner than skin on the body, such as on the back, thighs, and torso. However, skin on areas such as the neck and forearms can also be quite thin, similar to facial skin, but with fewer oil glands.”