sun’s uv radiation induces dark spot by melanin on young woman’s face. human skin cell. beauty and health care concept

skin pigmentation cell layer radiation ultraviolet care young female beautiful melanin dark spots blemishes exfoliation beauty treatment body melanocytes sun sunlight sunbeam blotch dullness epidermis dermis condition human health dermatology aging damage function tone complexion vector cause female’s diagram isolated white background induces spot face concept sunlignt sun’s woman’s face cell