Thought you may like some feedback. Started using GrittMitts about a year ago as Solvol no longer made. GrittMitts is superior to Solvol, which in itself was a good product. To me, GrittMitts has more soap content, which, in conjunction with pumice, makes for a great soap to remove grease and grime from hands.
I wish you all success, and great work on your formulation of GrittMitts.