100% pure chromium oxide mixed with a little oil to make the ultimate strop paste.
Rather than removing metal, stropping with chromium oxide smooths, polishes and refines the cutting edge; not unlike the effect water has on clay.
Chromium Oxide (Cr2O3 ) is a superfine, 0.3 micron, polycrystalline abrasive, it is the mineral that gives green polishing compound it’s colour. Most polishing compositions also include other minerals, but for purists like straight razor users, only the best will do.
For most people this 50 gram tub will be a lifetime’s supply.
Works like a charm, if you don’t believe me, ask your barber.