Moisturizers, sunscreens and anti-aging creams are usually sold on familiar promises: to keep water in the skin, strengthen its protective barrier, protect against sun damage or reduce visible signs of aging. These functions remain central to healthy skin. Researchers are now taking a broader view. The skin is also an active immune organ whose cells detect possible threats, send signals and help organize repairs. This shift could change what skin care products are designed to do.
Source: Medical Xpress
