Why do I get more drandruff with short hair than long?

I have short hair, and I keep it oiled.When I had longer, I didn't have this problem.Why do I get more drandruff with short hair than long?
Good question. Unfortunately dandruff can happen just because of weather changes, bacteria, hormonal changes, etc. Sometimes it has nothing to do with your hair length, but just sometimes comes/goes. The best thing to do is to use a light dandruff shampoo for a few days and see if your condition improves. Good luck!