Liquorice 7% versus selenium sulfide 1% shampoos in the treatment of dandruff: a clinical trial

Dandruff is a common inflammatory condition affecting more than half of the population. many products are used to treat dandruff. seleniumsulfide as an anti-malassezia, keratolytic and cytostatic agent and liquorice, extracted from glycyrrhiza glabra, with anti-yeast activities are known to be antidandruff 1-3. we conducted a placebo controlled-randomized clinical trial to compare antidandruff activity of liquorice 7% shampoo, selenium-sulfide 1% shampoo and a placebo. study participants were randomly selected from patients who referred to our dermatology clinic and those diagnosed with dandruff in our screening program held in 10 shiraz high schools.