You should never take treatment advice from sales reps, not EVER. If you do, you get what you deserve.
As a doctor you should know what/how to treat, and understand the physics of the device and the biology of what you are treating. It is extremely important to know some of the physics behind what you’re doing. Long wavelengths and large spot sizes penetrate deeply. If you’re treating a tiny spot, no matter what the wavelength, light is not going to penetrate deeply. If you are aiming at something like a tattoo or a deep blood vessel, you’re probably not going to hit it well with a tiny spot and will instead deposit most of the laser energy above your target.
In addition, one should not use large spot sizes with relatively long wavelengths (hair removal lasers) near the eye due to the risk of injuring the eye. In addition, protect the teeth during laser hair removal-these laser penetrate deeply. There is no substitute to understanding the science behind what you are doing.
