这种洗发水含有阳离子成分，能有效柔顺头发。

This shampoo contains ___cationic ingredients that help soften hair effectively.

这种阳离子洗发水能更好地吸附头皮上的负电荷污垢。

This ___cationic shampoo binds more effectively to negatively charged dirt on the scalp.