Medical aesthetician?

I am not sure if this is the right term. I'm looking for some underarm treatment. My dark underarms is a huge insecurity of mine. In the past I've had a few laser hair removal that didn't seem to work. It just ended up making my hair my resilient and I noticed 2 hair in some follicle sometimes. Any recommendation for a place to lighten the area, even skin tone and take care of skin tags? I don't mind shaving but maybe shaving is actually darkening the area?