Should try to avoid getting a chinchillas fur wet. Or using wipes (I would be worried there might be chemicals on them not healthy to chinchillas.
Like suggest, provide a sand bath and don't stress too much, it will slowly grow and shed out anyway, just liek when us humans get crazy and damage our hair.
Like suggest, provide a sand bath and don't stress too much, it will slowly grow and shed out anyway, just liek when us humans get crazy and damage our hair.