It is very efficient, so that you need only a small amount of it and it goes long.
What me very congenial, is that it can be used as a hair shampoo. So it goes even faster under the morning shower.
Practically I find the square shape of the bottle, so it can be placed well towards the end on the head, that residues can be removed easily and quickly.
However, one of the ingredients Polyquaternium-7th Polyquaternium contaminated with (small amounts) acrylamide, which is classified as potentially carcinogenic, mutagenic, toxic, irritant, sensitizing and toxic to reproduction (Source: Wikipedia)
This substance is intended to ensure the shampoo for better manageability and the shower gel for a better feeling on the skin. Polyquaternium-7 is not biologischabbaubar and the acrylamide contained therein is pure poison for wastewater treatment plants. Wen that interests more closely, found the net an interesting contribution of Marktcheck / 02.08.2012 about.
That Nivea Polyquaternium-7 have to use, I am sorry and lets me pull 2 stars.