Exfoliation is your friend when it comes to reduction of ingrown hairs.
By removing dead skin cells every time you shower with vigorous (but not "rub yourself raw") scrubbing using a wash cloth, you make it marginally easier for hair to reach the surface with fewer misadventures.
You can also try some exfoliating soaps or scrubs available in stores, but I haven't tried any. My method of chemical exfoliation involves dissolving uncoated aspirin in water, a trick I picked up from a Michelle Phan video.
I use the same brand epilator (the pink one in the series). Only a few have really tried to get properly infected so far, thank heaven.
If you continue to epilate regularly, pretty much every part of epilation will improve within a month or so. Less discomfort, less trouble with the irritation bumps, etc.