OK here is the procedure. I don't know if cream will work. I used soap. I made a lather and used the brush to coat the strop thick. Then I held the end of the strop and used the bottle just like it was a razor. I simply put it on the strop and ran it back and forth. The soap dripped onto the floor so I had to clean it up. Brown gunk came off the strop. After about fifty swipes I cleaned the strop off with a rag and I was supprised. The strop looked almost new and was softer. Even the scratches seemed to be gone. I had been using neatsfoot oil but never again. The barber told me you have to use a GLASS bottle or jar of some sort. When the strop dried overnight it looked great and it feels so much better when I strop, and the razor seems sharper. I would not have believed it if I hadn't seen it. I don't know what that soap and bottle ,but it sure revived my old strop. I am going to take it off the wall and lay it on some newspaper and do the other side. Also there is about six inches that didn't get done where I was holding it. Mack
By the way, It did turn the strop a little darker.