Ingrown hairs. How can I eliminate them and have a healthy pubic region again?

I sweat a lot in the region and experience a lot of hair growth. I experience excruciating pain from ingrown hairs and over the years it has compromised the health of my skin in the area. I have puss, nicks and bruising and the skin has become very dark. What can I do? I have done everything from exfoliate, drink/eat healthy, wear cotton underwear etc. I no longer shave/wax; I sugar. It's a minor, minor improvement as far as the number of ingrowns but the pain, bruising &darkness still exists.