New research has, for the first time, discovered hemoglobin in the uppermost layer of human skin, and found that it helps protect against damage. The findings provide important insights into skin ...

The integumentary system is the physical system that forms the barrier between the external environment and the internal systems of the body. In humans, this system consists of skin, hair, nails, and ...

The skin acts as the body's first line of defense against external threats. However, as we age, the epidermis-the outermost layer of skin-gradually becomes thinner and loses its protective strength.