I can't shave my lady parts anymore as I get ingrown hair every time and now I have a minor infection. I have tried waxing full Brazilian which is very painful and very expensive, so that's out. I haven't found a cream that works for me, because I usually grow my hair out to its fullest length before grooming it. I would like to find a razor like at the salon that can trim it to a desired length without completely removing the hair, but I'd also need something to get the bikini line which is very hard to get to.

What product would work best for someone who only shaves once the hair is fully grown and is prone to get ingrown hair?