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without such validation, false-positive results may occur (Shi et al., 2024)
10.3389/fimmu.2025.1556990 117 LinghuM.LuoX.ZhouX.LiuD.HuangQ.RuY.et al (2025)

MSM+Vit C can double as a skin lightening active as it potentially increases the production of pheomelanin, the light coloured pigment in skin

By subgroup analysis (staff vs
