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. 2022 Dec 7;11(24):3949. doi: 10.3390/cells11243949

Figure 6.

Figure 6

Improvement of hyperpigmentation and erythema in melasma patients after 590 nm LED light therapy. (A,B) Representative photographs (upper panel) and VISIA images (lower panel) of two melasma patients, showing significant improvement of hyperpigmentation and erythema after phototherapy. The change in mean MASI score (C), EI (D) and MI (E) of all patients enrolled during the course, shown as means ± SD. n = 10. *, p < 0.05; **, p < 0.01; ***, p < 0.001. MASI, melasma area severity index; EI, erythema index; MI, melanin index.