Nizoral A-D, the first OTC ketoconazole shampoo for dandruff
June 1999
You'll see lots of ads for Nizoral A-D, the first OTC ketoconazole shampoo for dandruff.
It's 1% ketoconazole...HALF the strength of the Rx version. The 2% shampoo will still be Rx for fungal skin infections.
Most people think dandruff is due to dry scalp...but one cause seems to be a common yeast called Pityrosporum ovale. Overgrowth of this yeast is thought to lead to scalp itching and flaking.
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