Blue light therapy is a narrow-band, high-intensity treatment for acne. Widely advertised, this is probably the best-known light therapy for acne treatment. Blue light works by killing the acne-causing bacteria, P. acnes, and is being used to treat inflammatory acne vulgaris that has not responded to other acne therapies. The blue-light products of today do not contain ultraviolet (UV) light. UV light can damage skin and is no longer used to treat acne.
Patients receive blue-light therapy in increments. Generally, eight sessions are given over a four-week period, and each session lasts about 15 minutes. Side effects tend to be mild and include temporary pigment changes, swelling of the treated areas, and dryness.
Approximate Length of Procedure: 15 minutes per session. 8 sessions over a 4-week period.
Approximate Cost: $150-250 per treatment.
Average Recovery Time: Patients can resume their activities immediately after treatment.