Blue light therapy (named because of the color of the light) is an alternative kind of phototherapy for mild and moderate acne. Medical studies report a significant reduction in lesions of patients who were treated with blue light for acne twice a week, for 5 weeks. Two patients reported dryness of skin but no one discontinued treatment. Blue light irradiation reduces the quantity of Propionibacteriumacnes (p.acnes).
Light Therapy Energy (LHE), another form of phototherapy for the treatment of acne, addresses cases where acne is moderate to severe. The green light shrinks the sebaceous glands, decreasing sebum production. With reduced sebum, bacteria is not attracted to the skin pore in such quantities. Treatment is usually performed twice per week, and is over in one month.
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