Greasy hair never seems to stay fresh and clean, and can look heavy and flat. Within a few hours of shampooing it refuses to stay full and light and it takes on a stringy appearance. Along with looking oily, greasy hair can appear lifeless, lank and dull. Does this sound familiar to you? Do you ask yourself "why is my hair greasy?" Even if they wash it everyday, others can judge that the sufferer does not wash their hair frequently and doesn't have good hygiene. This can cause much social embarrassment.

The grease in hair grease is oil and is called Sebum. Sebum is produced by the sebaceous glands which lie immediately under the skin in you scalp and each hair has a sebaceous gland. Greasy hair is in fact healthy hair, and the oil protects each hair strand from dryness and split ends. Sebum lubricates hair skin and provides a protective barrier to prevent drying. This oil is your own built-in moisturizer.

Greasy hair is actually an excess of sebum in hair which is a result of overactive sebaceous glands over-producing sebum, stimulated by hormones known as androgens. Although they are present in both men and women, androgens are male hormones and are higher in men. Androgens do two things: One, they increase the size of sebaceous glands in the skin. Two, they cause the sebaceous glands to increase the production of oil.

Fluctuating hormones can cause greasy as hormones play a part in sebum production. Greasy hair is most common in women because of either pregnancy or monthly cycle, older women going through the menopause, and teenagers experiencing puberty. Stress can be a contributory factor in greasy hair as it is known to affect hormones levels. People with fine hair on their head may experience excessive greasy hair as they have more hair follicles and more sebaceous glands producing more sebum.

There are many external causes of greasy hair. Over washing your hair can cause increase sebum production as frequent washing can strip the hair and scalp of all oils causing the sebaceous glands to excrete more to combat this. A build-up of grease can occur due to washing your hair too often. Scrubbing your hair and scalp vigorously while washing you hair can stimulate hair grease. Touching your hair can also increase the glands to over-stimulate, as can vigorous brushing which can carry the oil throughout your hair. Environmental factors such as everyday pollutants can cause hair to look greasy, as can the over use of hair styling products as the products build-up at the roots.

There are also several internal causes to greasy hair as well. Along with changing hormone levels, a major cause of greasy hair is the food you put inside of you, i.e. you diet. Western diets are usually much greasier, containing more fat. They are usually processed, containing many additives, and typically are higher in fat and sugar. The high fat content of the diet increases oil in the skin which can lead to greasy hair. The meat in a Western diet often contains some hormones, and these hormones can add to the levels of unbalanced hormones. Greasy hair can also be a sign of a diet that is low in vitamin B.

The best way of avoiding, preventing, treating and getting rid of greasy hair is to treat it from the outside and the inside. On the outside: steer clear of brushing your hair too frequently, and too vigorously. Avoid using a moisturizing shampoo as this can leave some oil in the hair. An extra cleansing or clarifying shampoo that has a mild-ph is the best shampoo to use for greasy hair. When shampooing, massage you hair and scalp lightly and do not scrub your hair and scalp.

When shampooing, leave the shampoo in your hair for approximately 5 minutes for a better clean. Rinse and shampoo again if necessary. It's up to you as to how often you should wash your hair. Once or twice a week is the ideal but to find your own balance of washing and oil production start with washing once a day, reducing how often you wash as you find that balance. If you are going to condition your hair, use a conditioner designed especially for greasy hair, and apply the conditioner not to the roots but to the mid and ends of your hair. If you use a hair dryer to style your hair, heat will stimulate oil production, so don't let it get too hot.

For the inside: do everything you can to reduce any stress that you may have in your life. For your diet, reduce the amount of fat and dairy products, and avoid fried, fatty and greasy foods as much as possible. Consider vitamin B supplements in your diet. Avoid sugar and sugary foods like cakes, biscuits and soft drinks. Reduce the foods containing white flour like bread, pasta and pastries. Be sure to eat lots of nuts, seeds and whole grains, and leafy & green vegetables, salads and fresh fish.