Personally, I have naturally oily hair even when I don't strip the oils, so I am a huge fan of dry shampoo. (wellnessmama.com)
It helps to treat both dry, dull hair as well as overly oily hair and can help prevent split ends. (wellnessmama.com)
A rough or oily hair coat can be a sign of illness as the desire to look beautiful is often overlooked by a cat once they aren't feeling well. (wagbrag.com)