Blue light therapy for acne spots – an ambulatory breakthrough
Many patients find that their skin improves and their spots seem better when they have been out in the sunshine.
However sunlight also contains ultraviolet (UVA-UVB) light which can damage skin and even cause skin cancer.
Scientists have found that visible blue light at a wavelength of 420 nm does not cause damage to the skin but is effective in killing P. acnes, the bacteria which causes acne.
Blue light has been used by dermatologists for many years to treat acne.