Skin Care Basics -- Skin Functions

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Skin is a dynamic, protective organ that grows, stretches, shrinks, creases, and wrinkles in response to a person's age, habits, weight fluctuations, and the environment. Skin serves many important functions including:

• protecting the body from environmental factors such as bacteria, fungus, viruses, allergens, water, and chemicals
• regulating body temperature by sweating and adjusting blood flow to the skin
• synthesizing vitamin D
• helping the body sense touch, pain, temperature, pressure, and position
• through the skin protein melanin, providing some protection against the sun's harmful ultraviolet rays