I've used this product for a while, due to hating post-shaving bumps and irritation problems.
Bikini Zone is pretty much a double-edged sword, it has it's ups and it's downs equally. On the upside, it does live up to it's promise of preventing bumps and irritations in the bikini area after shaving as intended. I haven't had any razor burn at all during my course of use of this product. On the downside, it burns and has a pretty bad smell. Putting this stuff on immediately after shaving is a BAD idea and leads to painful stinging, so waiting a minute or so after shaving works best. The smell of this product is also too mediciney.
If you can handle the two negative factors of this product, it's definetly worth using if you want to banish razor burn.