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Deep penetrating light therapy has become a more common act over the past decade to treat Acne vulgaris. Clinical trials show that 85%f the patients demonstrate a significant quantitative reduction in at least 50% of the lesions after four biweekly treatments. In approximately 20% of the cases, acne eradication may reach 90%. At 3 months after the last treatment, clearance is approximately 70% to 80%. The no respondent rate is 15% to  20%. Acne vulgaris is an emotionally crippling disease that result in psychological and social morbidity, with anxiety, severe depression and suicide ideation. Due to the comedones, papules and pustules outbreak ranging from visible areas such as the face, neck and shoulder, to other areas such as the chest and the back. Usually acne is treated with a variety of topical and oral therapies that introduce a considerable a number of short-term and potentially significant long-term consequences were many patients failed to respond adequately or developed unwanted adverse side effects. Previous studies indicate that deep penetrating light therapy successfully presents long-term intervention and selective damage of the sebaceous glands by using a diode laser with indocyanine green (ICG) dye. Mid-infrared lasers have been found to decrease lesion counts while also reducing the oiliness of skin and the scarring process. Nonablative laser treatment of acne scars using the (Er:YAG) laser with a short-pulsed mode has been successful in reducing the appearance of scars by stimulating neocollagenesis “Deep penetrating light therapy uses high-intensity, 400-W, enhanced blue light, a metal halide lamp, plus double UV-cut filters with the emitting peak of 407 to 420 nm, which produces 90 mW/cm2 homogeneous illuminations over an area of 20×20 cm2. The system destroys the P. acnes bacteria in facial, back, and chest sebaceous glands by targeting the porphyrins in the bacteria. The system has been cleared by the Food and Drug Administration to market for acne treatment.

Recent Innovations
Recently a newly developed high-intensity, enhanced, narrow-band, blue-light source called the (CureLight) was introduced for the treatment of mild to moderate acne. This apparatus uses high-intensity, 400-W, enhanced blue light, a metal halide lamp, plus double UV-cut filters with the emitting peak of 407 to 420 nm, which produces 90 mW/cm2 homogeneous illumination over an area of 20×20 cm2. . This system destroys the propionibacterium acnes bacteria sebaceous glands by targeting the porphyrins in the bacteria. The low morbidity ratio of this treatment along with added benefits of acne scar treatment and fast results of deep penetrating light therapy make it an inviting option and form of treatment. People should take note and be aware that is a chance of side effects such as pain, photosensitivity in ALA-PDT, and post-operative skin pigmentation changes in IV to VI skin types, so potential effects can be anticipated. Another drawback of this form of treatment would be the costs and lack of insurance coverage for the use of these new modalities. More studies are necessary to establish efficacy in larger sets of patients and in longer follow-up periods. Also, well-designed studies are needed to elucidate the results of combining traditional regimens and light/laser treatments on our population.