Those Annoying Flakes
An itchy scalp, a feeling of tightness, visible white flakes-if you’ve ever had dandruff, you’ve got plenty of company. It is a persistent skin disorder of the scalp caused by a tiny yeast fungus called pityrosporum ovale, or P. ovale. This fungus lives on our bodies and scalp all the time, usually without incident. Yet stress, perspiration, hormonal fluctuations, a diet heavy in fat and sugar, or something else entirely can lead to a surge in the amount of P. ovale on your scalp. Although dandruff is associated with dryness, people with oily scalps are not immune-in fact; slick scalps are especially attractive breeding grounds for P. ovale.   Â
There are numerous dandruff treatments available. Different individuals respond to different types of treatments, so you may want to experiment with the following:
1. Ketoconazole The active ingredient in many dermatological formulas and in the over-the-counter products. These products are generally used one to three times a week, as long as needed.
2. Salicylic acid the beta hydroxyl acid you may have read about in the skin-care chapters. When used to fight dandruff, it loosens the flaky scales stuck to your scalp and hair, so that these flakes can easily be washed away. Some dermatologists believe that removing a large portion of these scales makes it uncomfortable for fungus to continue breeding in large amounts.
3. Selemium sulfide and zinc pyrithione two ingredients used in dandruff shampoos such as Head and Shoulders. Both ingredients decrease the number of pityrosporon cells on the scalp.
4. Tar Found in dandruff shampoos and topical scalp lotions such as T-gel. It is thought that the ingredient is an anti-inflammatory that makes the scalp inhospitable to pityrosporon growth.
5. Topical steroids Anti-inflammatary and anti-itch ingredients that are available in shampoos and lotions prescribed by your doctor.
If your scalp is pink and you notice scales that are yellower and greasier than normal dandruff scales, you may have a severe form of dandruff known as seborrheic dermatitis and you should see a doctor immediately.