In the movie Grease, Danny Zuko made the slicked-back 1950s pompadour look dangerously dashing. But in the modern world, a greasy scalp and oily hair alludes to poor hygiene and tresses you're loathe to touch. If you have oily hair, the hormones that control oil production in your scalp are out of control, according to MedlinePlus. Get oily hair under control by shampooing more often and using products formulated for your hair type.
Shampoo
Use a shampoo formulated for oily hair. The Nemours Foundation cautions that clarifying shampoos can be harsh and stripping, though, especially if you have fine hair or combination hair, an oily scalp coupled with dry, frizzy ends. If you're an every day shampooer, it might be helpful to use a gentle shampoo instead. MedlinePlus suggests working up a lather and leaving the shampoo in your hair for five minutes for deeper cleansing. Avoid using shampoos that contain styling agents or "two-in-one" shampoos with added conditioner, advises skincare expert Paula Begoun, author of "The Original Beauty Bible."
Condition
If your hair is longer, you still can use a conditioner as long as you use it correctly. Again, select a conditioner formulated for oily hair. However, rub it into the length and tips of your follicles only, advises Begoun. When you rinse, tip your head down rather than back so the conditioner won't come into contact with your scalp.
Frequency
How frequently you shampoo depends on how oily your hair gets. The Nemours Foundation, which notes that oily hair can pose a problem for teens, indicates that you may have to wash your hair once a day, or even more often, if your scalp gets extremely greasy. One suggestion from Cosmopolitan magazine is to wash your hair with a clarifying shampoo for seven days before giving your hair a two-day break. Then use a gentle shampoo formulated for frequent use every other day. If greasy scalp returns, repeat the seven-day clarifying routine.
Other Tips
Handling your hair stimulates oil production. MedlinePlus advises refraining from brushing or combing your hair frequently or vigorously. This transfers oil from your scalp to the rest of your tresses.
Cautions
Oily hair is unattractive on its own merit but it also can cause acne breakouts along your hairline. Also, an oily scalp puts you at risk for dandruff, yet another cosmetic detractor. If you have acne or dandruff, MayoClinic.com advises shampooing your hair more frequently.



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