During March to June,its hot season for laser hair removal project, and there are a lot of laser hair removal devices in the market. And the prices also are varing. So what kind of laser hair removal device is best? And what is the difference between 808nm diode laser and coomon OPT hair removal device? Some experienced operator may consider about the treatment effect, while some newer will think about the price maybe. But we suggest that to buy a laser device is to make money, so the cost-effectiveness should be most important. So we ‘d better learn more about the laser difference and then make a decision.