For years, dermatologists have been quite aware that heat from lasers and light based therapies are capable of damaging the sebaceous oil glands. Accomplishing this helps patients secrete less oil. With chronic acne sufferers, the rigorous flow of sebum carries dead skin cells from the pore lining, causing them to clump and form persistent and deep pore blockages which are difficult to remove. According to Dermatology News, it may be possible to actually destroy the sebaceous oil glands through the selective use of laser energy. Using this approach,  it is possible to match certain wavelengths with very specific targets in order to leave the surrounding cells and tissues unharmed.