Bliss Get Out of Hair lotion includes a "fuzzkill complex" to minimize hair growth in between waxes and has willow bark extract to keep those pesky ingrown hairs at bay.
I'm also a huge fan of the No No:
It's an at home hair removal system that produces a thermal heat signal to destroy hair at the root. Using it twice a week will significantly reduce hair growth. It's pricey - $250 at Sephora - but much cheaper than laser treatments.