Does it look like the BP oil spill could have occurred... on your head? We're talking about lifeless locks that appear drenched in oil. No matter how long you wait, greasy hair will never be en vogue. The worst part is that you can step out of the shower and within minutes or hours, the oily appearance returns. Greasy hair is caused by the body producing too much sebum, a waxy substance that keeps the hair soft and waterproof. Hormonal changes can often lead to the overproduction of sebum. Oil build-up can also contribute to dandruff and dermatitis. Unfortunately, some people are more susceptible to oily hair because of genetics. There are those individuals who have a higher number of glands that produce more oil. While the condition is often at its peak during puberty for many people, there are those who deal with it throughout their lives. Basically, it's the luck of the draw. There are different ways to contend with the oil. Use medicated shampoos for oily hair. This should help you get a handle on the problem. In some cases, hair products such as styling sprays, gels or foams can compound the problem. Limit your use of these. If hair products are an integral part of your routine, opt for the lighter formulas. One common misnomer is that washing the hair frequently will alleviate the problem. This isn't always true. Overwashing can cause the scalp to dry out, which in turn causes the body to produce more oil in response. Experiment to see which frequency works best for your hair. Go easy on the cream rinses. Too much conditioner too often can lead to a buildup of residue in the hair.