Here's a hot tip (I picked up from a mate) for anyone who frequently gets greasy, oily and generally "workshop" hands:
Don't invest in expensive garage hand cleaner like Swarfega. Achieve the same or better results with sugar and washing-up liquid....at an infinitessimally lower cost.
Use a blob of washing-up liquid and tea-spoon of sugar and rub your hands just as if you are washing....but without water. The sugar acts as an abrasive. In less than a minute you will be ready to wash the stuff off - and if you don't have hot water, cold will work just fine too. Incredible but true.
(Now, how can package that as a product and make a mint? There must be mugs all over the place who will buy the stuff)