u/Hungry-Armadillo-960

Well I have this friend from school, and we’re not exactly close but not actually distant either. My friend is really nice, but she has this major problem, and that is that she smells really bad. Like I have to physically stand further away from her because she smells bad, kind of like onions sweat or toothpaste. She also always has really greasy hair that flakes and it falls on my desk (eugh)
I feel really bad about it but there’s people already taking about her and I want to help her in a way so it doesn’t get messy
How do I tell her without her being offended?