Undecided Question

How can I convince my boyfriend to take better care of himself?

Hey guys,

I've been with my boyfriend for 15 months now, and I'm really happy. I just wish he took care of himself better, he's in a band so he likes to have long hair, but after a while, I wish it was shorter and not too long. He does get a haircut every 6 months but it grows back really fast. He also doesn't washes his face.. he kind of does (only with water) but he also has oily skin so his face kind of smells after a long day. When I kiss him, the scent bothers me a little. I tried buying proactiv (because he also has acne) but it gave him a really bad reaction and his skin is super sensitive. Because of this, he refuses to use any other cleanser for his face. He also doesn't use body wash when he showers, he just uses water.. and I don't know if he cleans well down there either. He is uncircumcised and sometimes he asks me to give him oral. I sometimes get stuff in my mouth, I think it's called smegma? I just wanna know what I can do. Thnaks.