Efficacy and Safety of Letibotulinum Toxin A for the Treatment of Melasma in Two Different Dilutions: A Randomized Double-Blind Split-Face Study.

At 6 months ( Figure 4 and Figure 5 ), the telangiectatic melasma group generally showed greater reductions in Hemi-mMASI scores from baseline, particularly with the 1:10 dilution, although these changes did not reach statistical significance.

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