PROBLEM TO BE SOLVED: To provide a novel melanogenesis inhibitor.SOLUTION: A melanogenesis inhibitor has cerium oxide particles as an active ingredient.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】新規なメラニン生成抑制剤を提供する。【解決手段】酸化セリウム粒子をメラニン生成抑制剤の有効成分とする。【選択図】図1