Inside a container portion powder material is housed (12), the powder material of the present invention, the bottle cap type powder material is discharged into the bottle housing part (12) is opened with the cap removal operation in one, it is a powder ingredients contained housing portion (12), and weight by using a multi-functional powder properties measuring instrument multitester, dropped to the watch glass above the powder fall point the powder raw material, was dropped degree of dispersion by measuring the weight of the watch glass on, obtained by the following equation (1) is 5% to 40%. Weight × 100 (1) that was / dropped - (weight of the watch glass on weight was dropped) the degree of dispersion [%] =本発明の粉末原料は、粉末原料が収容される収容部(12)を内部に有し、開栓操作に伴い収容部(12)が開いて粉末原料がボトル内に放出されるタイプのボトルキャップ1における、収容部(12)に収容される粉末原料であり、多機能型粉体物性測定器マルチテスターを用いて、当該粉末原料を粉体落下点よりウォッチグラス上に落とし、投下した重量およびウォッチグラス上の重量を測定し、下記式(1)より得られる分散度が、5%以上40%以下である。分散度[%]=(投下した重量-ウォッチグラス上の重量)/投下した重量×100 (1)
