Is it still accepted practice to give one's tubes (steady!) a good dusting with this prior to installation in one's tyres? My late father taught me to do this after repairing a puncture to stop the tube sticking to the tyre, and I've always got by by powdering some up from sticks of it I, ahem, 'appropriated' from work Lookin on the 'net, Cromwell Tools, of which there is a bracnh in P'Boro, sell it in 1/2 kilo bags for £4.39 + V.A.T. but describe it as 'natural talc', and I saw it described elsewhere as unscented talc. Apart from making me/my bike smell vaguely like a tarts handbag, does this mean it's OK to use talc, as it's cheaper than this?