PROBLEM TO BE SOLVED: To provide an active ingredient having excellent biological safety, and an external composition for skin or an oral composition containing the active ingredient.SOLUTION: The present invention provides fermented products of mucopolysaccharides obtained using lactic acid bacteria, yeast, koji mold or Bacillus subtilis, and an external composition for skin or an oral composition containing the fermented products.SELECTED DRAWING: NoneCOPYRIGHT: (C)2019,JPO&INPIT【課題】生体安全性にすぐれた有効成分、及びこの有効成分を含む皮膚外用組成物又は経口用組成物を提供することを目的とする。【解決手段】 本発明は、ムコ多糖の乳酸菌、酵母、麹菌又は枯草菌発酵物、及びこの発酵物を含む皮膚外用組成物、又は経口用組成物。【選択図】なし