I would be leery of any of the caustic black salve products that close to your eye - the ones with high zinc content surely do et big holes in the skin!
The baking soda idea sounds like a good one. Oleander extract made according to exact directions to remove the toxins and further condensed and made into a skin creme should also work well - but it takes time and you have to be persistent.
Finally, a good overall anti-cancer protocol would be in order to make sure your cancer is defeated and does not spread and become established anywhere else in the body - or if it has become established, make sure you wipe it out in the early stages. Some cancers take eight years to reach the size of a pinhead after becoming established.