One of the the most sought after cosmetic procedures in the world is laser hair removal of unwanted hair.Of which only a few treatments are necessary for the hair to be removed and prevented for growing. But have you ever seen up to close ?
As explained in the video of Veritasium, when the laser beams hit the skin, the dark hair absorbs this light. The temperature in the fiber increases and begins to dry out and quickly evaporate. When it reaches a temperature of 60 degrees Celsius, the hair root is damage, which prevents the re-growth of new hair from the same place.