HOW DOES LED LIGHT WORK? LED, light emitting diode therapy is used in skin care treatments because of its various wavelengths. LED stimulates cellular responses to increase a smooth, plump and youthful complexion.Unlike other light therapy it does not contain ultraviolet rays. Red light reduces inflammation which provides skin with a stress-free healthy immune response. Blue light is important for good health. Great for oily/acne prone skin! $50  add-on to any facial treatment