Girls, how do you prevent razor bumps down there?

I'm a guy and I like swimming so as like an optimization project I am trying to eliminate anything that would slow me down. Like with drag. So I switched to brief style swimwear but I need to shave so there isn't hair visible lol. I get bumps though.

Me in swim brief with bumps
Me in swim brief with bumps

I put a pic of me showing the issue. The fit of the briefs is good but the bumps are annoying. Do you have any tips? I assume you'd have more experience than guys lol

Girls, how do you prevent razor bumps down there?
Post Opinion