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The aim of this study was to assess the efficacy of an oral supplement (CP) containing collagen peptide, soy peptide, and chrysanthemum extract in Chinese female adult volunteers with melasma. The approval of the Institutional Ethics Committee of the third affiliated hospital, Sun-Yat Sen University, was obtained before the study. A signed consent was obtained from each volunteer prior to study to enable the volunteer to appreciate the aim of the study and the consequences of her consent. Sixty-two female volunteers aged 30–60 years were included in the study, and were randomized into a treatment group or a placebo group. The skin tone of the pigmented spots was evaluated using Chromameter, and pigment density was evaluated using Mexameter before and after the treatment. Significant changes in skin tone parameters of L value and ITA° (individual typology angle) were detected in the lesion area after the treatment (P < 0.01). When compared with placebo group, the treatment group achieved significant improvement in the brightness of the pigmented spots at the 45 and 60-day time points. A significant decrease in the level of melanin was observed in the treatment group when compared with the placebo group (p < 0.01). All data demonstrated through non-invasive in vivo instrumental measurement that daily oral intake of CP had clinical efficacy of reducing melasma severity

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Instrumental Evaluation of the Depigmenting Efficacy of an Oral Supplementation Containing Peptides and Chrysanthemum Extract for the Treatment of Melasma