Used occasionally and diluted with water, low-concentration hydrogen peroxide (approximately 3%) sold over the counter at pharmacies is also used to manage dandruff-like symptoms and itching. However, hydrogen peroxide treatment can cause scarring if the solution is not washed off after a short treatment (5 minutes or less is sufficient). Hydrogen peroxide diluted 50-50 with tap water in a foot bath is also effective in prompt removal of Malassezia fungi of the feet (these being the cause of "toe cheese" - as the Flemish call it).