There are a couple of really good sprays that can be used depending on what is causing the dandruff. If it's just dry skin, a moisterizing spray will do the trick usually. You might want to check with the your vet first though. Dandruff can be cause by more than just dry skin. Your pet might have a allergy or even psoriasis which can be caused by a vitamin deficiency. There's a couple of other things that may cause it as well. A simple skin test would determine the problem. Hope this helps.