Light therapy otherwise known as phototherapy comprises of exposure to UV light or to specific wavelengths of light by means of  lasers, LEDs, fluorescent lamps, diachronic lamps or very bright, full-spectrum light, for a prescribed therapeutic amount of time and at times for a specific time of day. Successful management of Acne vulgaris, seasonal affective disorder, and usual treatment procedure for DSPS (delayed sleep phase syndrome). light treatment for acne was long popular to treat acne, and this was thought to be related to therapeutic antibacterial while other effects of the ultraviolet spectrum are at the same time known to cause permanent damage to the skin that is why modifications to create artificial ultraviolet rays are implemented however, didn't perform as well as normal sunlight. Home management of  light boxes works appropriately for people with chronic acne, and is advantageously to be more affordable than professional light treatments appointments, and for this reason alone, it is conveniently repeated over several years for affordable cost,  instead of once twice weekly that more often than don’t religiously occur due to financial reasons. However the light treatment for acne used in the dermatological clinics is of higher intensity that is used for home management that being said also meant higher risk of damage to skin integrity.

Overall good prognosis of light treatment for acne on average of seventy six percent for eighty percent of patients takes effect over a span of three  months; a number of studies has been proven that it therapeutically acts better than benzoyl peroxide and the light treatment for acne is far better tolerated and perhaps, preferred. Ten percent of users see no positive development, quite a lower part compared to the average good prognosis of seventy six percent.