The Grey Paste is to be used only for the canvas side of the strop. It is extremely mild and can be used everyday. Keep in mind this should only be used on your cloth side of your strop, if you have felt you can also use this product just keep in mind that the first coating seams to suck up a lot of product but that's because it's white so just spread it evenly and don't overdue it. Once your Canvas/Linen/Cloth/Felt is coated only do 10 to 15 passes at most. This product is designed to be used daily since it is so fine.
Note: For some reason the Manufacturers call it GREY instead of WHITE. I have no idea why since there is no grey band on it.