What exactly does selenium sulfide do in this shampoo, and is it safe for regular use?

Selenium sulfide is a key active ingredient in this shampoo. It works by helping to limit the overgrowth of yeast on the scalp, which is one of the common factors that can contribute to visible flaking and irritation associated with dandruff. It is not a typical cleansing agent; its role is more targeted towards managing the scalp environment.

For regular use, it is considered safe when used as directed on the product label. However, as with any active shampoo, it is important to monitor your scalp's response. If you experience excessive dryness, redness, or irritation, it is advisable to reduce the frequency of use. A common approach is to use it 2-3 times a week, alternating with a gentle, non-medicated shampoo to maintain scalp balance and prevent over-drying. Always avoid contact with eyes, and rinse thoroughly.