[extrapickles]

As far as I can tell, all forms of optical (laser, IPL, etc) hair removal techniques all kill the hair follicles by causing them to heat up and do not actually cut the hair. There might be a magic wavelength (or combo of them) that would cut without killing the follicle, but then you will be burning hair at that point and would need very good ventilation.

There was a Kickstarter a while back that tried to make a laser shaver, but they never could demonstrate it working (they had a few very suspect videos) and it was pulled. I would be very worried about getting scammed when looking into light based hair trimming.

Basically, any form of light (laser, xenon flashlamp) with a wavelength bigger than UV pretty much only damages things by heating. UV can do chemical damage in addition to heat by causing things to fall apart, though the potential for damage to the eyes is extreme as eyes due not tolerate UV.

However, if something does exist and works, I would love to be proved wrong in this regard as one can then do some amazing things with the tech.

[theforceawakens]

Great points there! Will definitely consider these during our R&D process. Thanks so much.