The product meets my expectations. I did not feel like dirt on the car paint laborious way to polieren.also ordered and tried the same Petzoldt's professional cleaning clay MAGIC-Clean. All stains and / or dirt of were not to get away with the normal hand wash or high-pressure cleaner can really remove this knead effortlessly and simply by the I spot or area with tap water from an old glass cleaner spray bottle moisten and with few corresponding wiping movements Cleanse. and polishing = effortlessly without pressure and or physical effort as in. So far there have not a contaminant that I could not remove the knead. on glass and the rim, they fulfilled their mission. (I have the dough to halve in 2 parts, one part for paint and glass, the other for the rim.) am thrilled and can only recommend it. if the dough too dirty (consumed), it slowly dissolves. but noted is that of cleaned with plasticine paint at this point no more protective hat. one should also deal again with wax or like him after that, because the dough "everything" away.