light in the spectral range of 600 to 1,300 nanometers has been found to be useful for promoting wound healing, tissue repair, and skin rejuvenation, although it does this through a different mechanism of action compared to many other laser resurfacing treatments. Most laser therapies used in dermatology offices use intense pulsed light to promote skin rejuvenation by inducing secondary tissue repair. In other words, they cause intentional damage to either the epidermis or the dermis of the skin in order to trigger inflammation, followed by healing.

Red light therapy actually bypasses this initial destructive step and instead directly stimulates regenerative processes in the skin through increased cellular proliferation, migration and adhesion. Red light therapy has been shown to positively affect skin cells through regeneration of fibroblasts, keratinocytes, and modulation of immune cells (including mast cells, neutrophils, and macrophages) all found within skin tissue.

One use of red light laser therapy that’s growing in popularity is reversing signs of aging on the skin (i.e, wrinkles and fine lines). Results from a 2014 study published in Photomedicine and Laser Surgery demonstrated both efficacy and safety for red light therapy in promoting anti-aging skin rejuvenation and intradermal collagen increase when compared against controls