How To Treat Irritation Near My Vagina?

I shaved my genital area 4 weeks ago like near the crease of my thigh near the vagina and it had been irritated every since I sweat in there alot and after I shower and pat dry ut gels better or if I use an ointment. Pr powder but I thi k I need something stronger ..but when I get home from work it itches really bad...