LED phototherapy for skin rejuvenation

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LED phototherapy for skin rejuvenation ( led-phototherapy-skin-rejuvenation )

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56 S.Y. Lee et al. / Journal of Photochemistry and Photobiology B: Biology 88 (2007) 51–67 a 105% 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% 50% b 0.80 0.75 0.70 0.65 0.60 0.55 0.50 0.45 0.40 Before treatment 2 weeks post- treatment Group 1 4 weeks post- treatment Group 3 4 weeks post- treatment 8 weeks post- treatment 0.80 0.75 0.70 0.65 0.60 0.55 0.50 0.45 0.40 0.80 0.75 0.70 0.65 0.60 0.55 0.50 0.45 0.40 0.35 0.30 12 weeks post- treatment Covered side 0.35 Treated side Group 2 4 weeks post- treatment Group 4 0.30 0.80 0.75 0.70 0.65 0.60 0.55 0.50 0.45 0.40 0.35 0.30 Before treatment 2 weeks post- treatment 8 weeks post- treatment 12 weeks post- treatment Before treatment 2 weeks post- treatment 8 weeks post- treatment 12 weeks post- treatment Covered side Treated side Before treatment c 2 weeks post- treatment 4 weeks post- treatment 8 weeks post- treatment 12 weeks post- treatment Before treatment 2 weeks post- treatment 4 weeks post- treatment 8 weeks post- treatment 12 weeks post- treatment Covered side Treated side Group1 Group2 Group3 Group4 Covered side Treated side Fig. 1. The severity of wrinkles (represented as average roughness, R3 value) decreased significantly in the treated sides of the treatment groups compared to baseline, which was not observed in the covered sides of all groups or in the treated sides of the control group. (a) Percentage reduction of R3 values (average roughness) in the treated sides of each group. (b) Comparison of R3 values between the treated sides and the covered sides within each group. (c) Clinical photos showing an improvement of periorbital wrinkles 3 months after LED phototherapy (right) compared to the baseline (left).

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