PROBLEM TO BE SOLVED : To provide a packaging bag having an aluminum layer and stably preserving 4-n-butylresorcinol.SOLUTION : A problem is solved by a cosmetic package where : an olefin layer is provided as the outermost layer of a contacting side with a content; a cyclic olefin copolymer layer is included between an aluminum layer and the olefin layer; the olefin layer includes one or more kinds selected from among LLDPE, LDPE and PP; and a cosmetic (including quasi drugs) including 4-n-butylresorcinol and/or a salt thereof as an active ingredient is filled in the storage part of a packaging bag.SELECTED DRAWING : Figure 1