uv rays penetrate into the epidermis skin layer, freckles woman face, result of overproduction of melanin.

freckles skin rays melanin radiation penetrate damage ultraviolet inflammation melasma face woman pigmentation hyperpigmentation ephelides solar lentigines actinic discoloration complexion disorder genetic blemish premature epidermis dermis melanocyte melanogenesis layer cross sun exposure sunburn sunscreen tanned aging pigment cell vector infographic affect cancer dna dermatology aesthetic protection sunblock flat design summer result overproduction small brown spots isolated white background care concept cartoon brand organ font clothing head nose pattern person adult drawing