Lasers produce coherent light energy of a sufficient strength and of a specific wavelength, which when projected into tissue is differentially absorbed by the target material, producing heat and hence destroying tissues. Other tissue components are unaffected and so spared.

Keratosis pilaris is a common, harmless skin condition. It causes small, hard bumps that may make your skin feel like sandpaper. Keratosis pilaris is caused by a build up of keratin, the protein that protects skin from infections and other harmful things. The build up forms a plug that blocks the opening of a hair follicle.