I disagree about breeds being prone to dandruff. It's not natural and not normal, in any breed. Also, people are not allergic to dandruff itself but to a particular protein that may be present in it. Here is an excerpt from our report on "Living with Allergies to Cats":
"The 7 known cat allergens are shed in saliva, skin secretions, and to some extent in urine. The major cat allergen is a protein called “Fel d 1” that is secreted primarily in the cat’s saliva and skin, and transmitted throughout the coat during grooming."
In my experience, most often, dandruff it is related to diet, and usually to the dry food. Just adding or increasing the amount of canned food, because it's higher in protein and fat as well as moisture, will make a big difference.
I recommend Nutro, but admittedly it is not the *best* of the natural/superpremium foods. It's a good, reasonable choice if you have a limited budget and/or do your shopping at Petsmart or Petco. It's fine to include in a rotation among several good brands. Nutro has set itself up as the better alternative to Iams, and that is certainly true. I have a lot of respect for Nutro and know many of the folks that work there. They're good people. But not all animals will do well on their foods. My dog had a terrible time with their beef and rice, but did fine on the lamb and rice. Go figure.
Supplementing the diet, particularly with Omega-3 fatty acids, will often do wonders for the skin and coat. Antioxidants and enzymes wouldn't hurt. See
http://www.littlebigcat.com/index.php?a ... atsanddogs for more details on supplements and what they do.
Combing will eventually help, too, by distributing the oils more evenly through the coat, but in the short term you are likely to see the problem get worse. If you persevere through it, you'll be rewarded!
Cheers,
Dr. Jean