That is what I use now, Tab. Back in the natural verses argument on another forum a few years ago, it was suggested to try charcoal to use as black colourant in your soap. That is where I got the idea. It was a hastile grinding that fish charcoal up and since just used the black mica. A little of that goes a LONG way! There is also cocoa that some use to colour soap black or chocolate. Charcoal really does not "add" anything I know of to the soap.Tabitha said:Why not just use black mica?