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health.howstuffworks.com/skin-care/information/anatomy/what-is-skin-made-of.htm

The epidermis is the outer layer of skin, comprised of translucent cells that produce keratin, a protein that protects you from potentially detrimental factors in the environment. This is the layer of skin that you can actually see and touch. The epidermis is also home to cells that produce melanin, which is the substance that gives skin its color.

en.wikipedia.org/wiki/Skin

Skin is the layer of usually soft, flexible outer tissue covering the body of a vertebrate animal, with three main functions: protection, regulation, and sensation.. Other animal coverings, such as the arthropod exoskeleton, have different developmental origin, structure and chemical composition.The adjective cutaneous means "of the skin" (from Latin cutis, skin).

www.smartskincare.com/skinbiology/structure.html

What Is the Skin Made of? The skin is the largest organ in the body, comprising about 15% of the body weight. The total skin surface of an adult ranges from 12 to 20 square feet. In terms of chemical composition, the skin is about 70% water, 25% protein and 2% lipids. The remainder includes trace minerals, nucleic acids, glycosoaminoglycans ...

en.wikipedia.org/wiki/Human_skin

The human skin is the outer covering of the body and is the largest organ of the integumentary system.The skin has up to seven layers of ectodermal tissue and guards the underlying muscles, bones, ligaments and internal organs. Human skin is similar to most of the other mammals skin, and it is very similar to pig skin. Though nearly all human skin is covered with hair follicles, it can appear ...

www.nationalgeographic.com/science/health-and-human-body/human-body/skin

Skin is made up of three layers. The outermost is the epidermis. This consists mainly of cells called keratinocytes, made from the tough protein keratin (also the material in hair and nails).

www.webmd.com/skin-problems-and-treatments/picture-of-the-skin

The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue. The skin’s color is created by special cells called melanocytes, which produce the pigment melanin. Melanocytes ...

www.britannica.com/science/human-skin

Human skin, in human anatomy, the covering, or integument, of the body’s surface that both provides protection and receives sensory stimuli from the external environment.The skin consists of three layers of tissue: the epidermis, an outermost layer that contains the primary protective structure, the stratum corneum; the dermis, a fibrous layer that supports and strengthens the epidermis; and ...

www.webmd.com/skin-problems-and-treatments/understanding-your-skin

Your skin is the largest organ of your body, made up of several different components, including water, protein, lipids, and different minerals and chemicals. Its job is crucial: to protect you ...

kidshealth.org/en/kids/skin.html

The skin is made up of three layers, each with its own important parts. The layer on the outside is called the epidermis (say: eh-pih-DUR-mis). The epidermis is the part of your skin you can see. Look down at your hands for a minute. Even though you can't see anything happening, your epidermis is hard at work.

health.howstuffworks.com/skin-care/beauty/sun-care/sunscreen1.htm

Skin is made up of very specific cells and tissues, and their collective purpose is to act as the boundary between "you" and "the world". One of the neat things about skin that makes it different from a lot of other organs is the fact that it does have to deal with the real world.