As the one or more soluble porous solid material has a density of about 0.03g / cm3~ about 0.15g / cm3, and zwitterionic direct dyes, non-ionic surfactants, cationic surfactants , or a method with one or more soluble porous solids which contain these mixtures, soluble solids hair coloring articles with, and that the soluble solids hair dyed article is applied to the hair.1つ以上の可溶性多孔質固体物が約0.03g/cm3~約0.15g/cm3の密度を有するように、双性イオン性直接染料と、非イオン性界面活性剤、カチオン性界面活性剤、又はこれらの混合物を含有する1つ以上の可溶性多孔質固体物と、を有する可溶性固体毛髪染色物品、及び可溶性固体毛髪染色物品を毛髪に適用する方法。