DS is 9 and has been getting pimples - ugh!!!!!!

I bought some face wash and we have been using it and his face looks great. Problem is he HATES washing his face and wants to know why I care if he has pimples because he doesn't care and its his face

I told him I care because he needs to take care of his body.

The real reason is because kids are assholes and I don't want him being made fun of.

Would you insist your kid wash their face and keep it clear or let him be and have pimples?