Flaky business

Simple dandruff or Pityriasis is a dry scalp problem that can, believe it or not, be controlled with a healthy diet, cleansing, and brushing. 50 million people in the U.S. alone have dandruff and $300 million is spent on products to control it. Some of these commercial dandruff products are harmful as they contain cola tar and selenium sulfide. This chemical has been shown to reduce the production of skin tissue, and has been linked to hair loss as it dries hair out, and causes nerve damage.

Seborrheic dandruff is a more severe condition that appears as dry, scaling flakes in the hair, eyebrow...