Phototherapy refers to the use of nonthermal, noninvasive light to achieve a therapeutic outcome for medical and cosmetic uses to treat a variety of aesthetic disorders such as acne, wound healing, actinic keratosis, rosacea, psoriasis, skin rejuvenation, and erythema post-procedure. The wavelengths of light that have demonstrated therapeutic applications are blue (415nm), red (633nm), yellow (590nm), and near-infrared (830nm). LEDs are nonablative and nonthermal, don’t cause damage to the epidermis or dermal tissue. There are no adverse effects related to its use and little or no downtime.
Propionibacterium acnes (P. acnes) is a bacterium involved in the pathogenesis of acne vulgaris. The blue light is effective for treating P. acnes because it destroys its cell membrane. It is recommended a total of 8 sessions (2 sessions per week) of Light therapy during 10-20 minutes. The light therapy may be used in combination with microdermabrasion.
LED red phototherapy might enhance wound healing following surgical aesthetic and resurfacing procedures. It is recommended to expose the area for 20 minutes immediately after the procedure, 48 hours post-procedure and two more times in the following week. The benefits are faster healing of redness, inflammation and bruising.
Actinic keratosis (AK).
AK refers to rough, scaly lesions that can occur following long-term sun exposure in fair-skinned persons. It occurs most often occurs on the face, forearms, and back of the hands. The stimulation with red LED therapy improves noticeably these skin lesions.
Improves the appearance of photoaged skin. This nonthermal process stimulates fibroblast proliferation, collagen synthesis, growth factors and extracellular matrix production. The result is lifting and tightening lax skin and wrinkle reduction.? Recommended exposure: 20 min using red LED light once or twice a week.