Laser hair removal, is it safe? female friend is getting it. i heard it kills hair cells and i wonder how that can be safe, if it kills cells.

Safe: Pigments absorb wavelengths of light that correlate with their color. Certain laser light wavelengths correlate with the pigment of darker hair tones. In this way, the laser energy is absorbed uniquely in the hair follicle while minimizing energy to the surrounding tissue. Energy (heat) from the light destroys the follicle while leaving skin. Very safe when done by trained professional.