Cosmetic laser treatments are one of the fastest growing medical procedures. They're used for hair removal, skin tightening, and wrinkle reduction. And they can produce amazing results. They're sold to you through online daily deal sites, at hair salons, medical spas and even tanning salons. The ubiquity of the marketing has lulled many patients into thinking it's as safe and pain-free as advertised. But put one of these lasers in the hands of someone without the right training, and you can end up with permanent skin damage. A W5 investigation has revealed that the lasers used in the treatment are virtually unregulated, and can cause horrific injuries.