The Chinchilla cat should be brushed daily to avoid the coat knotting and matting. Special attention should be given to the neck, underarms and inner leg areas. It is recommended not to put a collar on your cat, as this area knots up quickly.
Your kitten would have been bathed a couple of times before you took ownership. This is to sensitize your kitten to water, as their bottom area sometimes requires a quick wash. Use a gentle shampoo suitable for cats, and a low, cool setting on your hairdryer.