Kentucky Cosmetology State Practice Exam

The epidermis is the outermost layer of the skin and it serves as a protective barrier. While all the components listed in the other options may play a role in skin health and function, they are not the main components of the epidermis. Melanin and sebum are produced by cells within the epidermis, but they do not make up the epidermis itself. Collagen and elastin are proteins found in the dermis, the layer below the epidermis. Hair pigment and sweat glands are located deeper in the skin and are not part of the epidermis. Keratin and fats are the main components of the epidermis, providing strength and flexibility to the skin.