Vitamin C has long been sold as a shortcut to a brighter complexion, but the latest research suggests it is doing something ...

As skin ages, it slowly loses its ability to renew and protect. The outermost layer, called the epidermis, becomes thinner. This change weakens the skin’s natural barrier and raises the risk of injury ...

With more collagen forming beneath, fine creases begin to fade. A smoother surface appears because cells renew faster while ...