I was not disappointed, cap, fix, impress and spread with a sponge. Pleasant is also the simultaneous cleaning function, since one the mud which settles on the seals, just smeared with a foster eg. With Vaseline if you do not clean the seals before.
The amount is sufficient for a minimum of two-time care, ie pay hot 3-4 EUR per year. Of course, the Sonax Rubber protectant is relatively expensive, which is probably the Applikatorschwämmchen, but really in the price over the year not worth mentioning.
A star deduction there that even the sponge is not ideal for tricky window seals and afterwards you are likely the same can advance without streaks with Clin to clean the windows.