Portion of skin, showing the epidermis and dermis; a hair in its follicle; the arrector pili muscle mass; sebaceous glands.  Human hair incorporates melanin which provides darkish coloration and defense from UV radiation. Human hair can take up and emit light-weight throughout a wide range of wavelengths. The picture over https://hair-salon-in-ottawa09765.magicianwiki.com/1476348/considerations_to_know_about_hair_salon_in_ottawa