Ive had the same problem, here's the fix: At night, skip an application of the topicals and rub some good moisturizing lotion into your scalp. It'll make your hair all greasy but who cares, you're going to sleep.
When you wake up, dandruff will be gone! It actually might take a couple applications but usually one is good enough for me.
Normal dandruff is caused by the Pityrosporum ovale fungus. If you're using Nizoral, this isnt an issue. Its just dry scalp from the chemicals in the topicals (ethanol, propylene glycol, etc)...skin lotion does the trick.
BV