Personally I just take my electric shaver and give the inside of each cheek a pass over on the biggest guard setting and live with the fact that there's gonna be some hair in there. It's okay to be imperfect! I can totally understand wanting to be totally clean shaven, believe me, I do too, but in my experience people IRL don't really care that much. If a little bit of hair would stop someone or make someone think you're ugly, they're not worth it.

Respectfully,