I came across this website. I've pasted the link.
The summary is that you can use synthetic craft store clay to clay-detail your car. Could this be true? It says that synthetic craft clay (no, not play-dough) has essentially the same cleaning properties as the expensive car-specific detailing clays.
ps. did you know claying originated in Japan? .. I was actually in Japan last week, and clay bars over there are less than $10CAD for 200g. and whats more is that everyyyyoneee clays their cars.
anyway, tell me what you think about using regular craft store modeling clay as car detailing clay.
heres the link