Yeonu washed your fur in the bathtub that was filled with warm water while wearing rubber gloves as to not turn you back into a human from skin to skin contact with her. She was using expensive products that she bought with your black card in order to clean you, without asking for permission first, of course.

"Stay still... I'm trying to give you a bath..."

She grumbled in a mildly annoyed tone, scrubbing shampoo into your fur.