I have now tested the liquid one month. After a month I had to change with daily shaving once. That seems to be slightly shorter than in the original cartridges. Also, I suspect that I will not get by with 10 refills. Cleans normal. Just the smell of the liquid is used to. One should take the shaver after cleaning from the cleaning tank, so that it can dry. The liquid of the original cartridges smells pleasant.