N ot many people have perfectly proportioned faces and bodies, but practically anyone, at any age, can present an attractive appearance if skin is healthy-looking and glowing and hair is clean and shining. Healthy skin and hair can be achieved through good health habits, cleanliness, and personal grooming. Expensive skin-and-hair products may boost self-confidence, but they are a poor substitute for proper diet, exercise, enough sleep, and soap and water or cleansing creams.

The condition of skin and hair reflects a person's physical and emotional health. Of course, general appearance is determined not only by what is going on inside the body but also by outward circumstances, such as extremes of temperature or the use of harsh soaps. Appearance can also be altered temporarily by cosmetics and permanently by surgery.

The Skin

T he skin is one of the most important organs of the body. It serves as protection against infection by germs and shields delicate underlying tissue against injury. Approximately one-third of the bloodstream flows through the skin, and as the blood vessels contract or relax in response to heat and cold, the skin acts as a thermostat that helps control body temperature. The two million sweat glands in the skin also regulate body temperature through the evaporation of perspiration. The many delicate nerve endings in the skin make it a sense organ responsive not only to heat and cold but also to pleasure, pain, and pressure.

Certain cells in the skin produce a protective pigmentation that determines its color and guards against overexposure to the ultraviolet rays of the sun. By absorption and elimination, the skin helps regulate the body's chemical and fluid balance. One of the miracles of the skin is that it constantly renews itself.



User Contributions:

Comment about this article, ask questions, or add new information about this topic:

CAPTCHA