Melanocytes in skin produce melanin. Sunlight darkens skin. Intense sunlight can lead to development of skin cancers. People with little or no melanin in their eyes, skin, or hair are called albinos. If an albino child shows unusual bruising or bleeding one may suspect Hermansky-Pudlak syndrome.
Skin passively protects the body from elements of nature and microbes.
It is now known that epidermal cells called Langerhans cells trap antigens penetrating skin. Yes and skin produces a local hormone - thymopoietin. Please read on for the full story. Our skin is a large organ. It is protective and sensitive.