While some swear by Duschschaum, others find it just goofy. I move somewhere in the middle. I like the Duschschaum of Spitzner, but I have the feeling of having to use shower gel in between, because this foam leaves simply no refreshing feeling. This is not to Spitzner, but from my perspective the foam itself, because ritual fared quite similar to me.
My Conclusion:
For people who are the subject of soap is very important under a shower, the shower foam from Spitzner is an absolute must. It is in my view no JEDENTAGSACHE, but something for which you should take some time. A foam of the costs 5 euros, should just be enjoyed.