Preventing razor bumps/ irritation

Courtney • 🌸
This might be really awkward but how do i precent razor bumps down there? Ive tried everything exfoliating before i shave , using a fresh new razor, mens shaving cream, razor bump ointment for after you shave. The itchiness is uncontrollable and i when i put the razor bump ointment stuff on it only seems to last a couple hours and it barely works. Im begining to get mark after i get rid of the razor bumps and it looks disgusting. Im starting to think i cant shave down there at all because nothing works.😔 please help