NandaDeep Paul, U have led me into confusion !!! I see a person sitting in a style roadside barbers sit, and instead of a head to shave, he is working on a cycle. Also he has, what u claim to be a Can with Shaving Cream in it. and the question is ".... I saw many ppl using Shaving Materials cleaning their freewheels.. I wanna know what actually they use and why ...." Well 1) there is only 1 person there, so your assumption "many ppl" goes out of the window. 2) There is no brand of Shaving Cream or any other info as to what the Can contains, visible, so I can assume that there is some stuff (that the person might be thinking will clean/polish or improve his cycle looks or rolling). The best way to find out is try some stuff yourself and check out the results. However I am very averse to giving my cycle a SHAVE and shall look forward to you putting up the results on this site.
Oh by the way please take this in a lighter vein and not too seriously !!!