24 mild to severe acne patients with Fitzpatrick skin types II-V received 415 nm blue at one session alternating with 633 nm red at the next. Schedule was 2x/week, 3 days apart, 20 min. per session, 48 J/cm^2 415 nm or 96 J/cm^2 633 nm. All subjects had mild microabrasions before treatment. Both groups saw a 46% lesion count reduction at 4 weeks, and an 81% lesion count reduction at 12 weeks.
Nine psoriasis patients used 633 nm red and 830 nm infrared LED therapy on recalcitrant psoriasis. The majority had failed earlier treatments.
Seven patients show 60% to 100% clearance of psoriasis symptoms when measured from three to 8 months after treatment. Two of the subjects could not be located.