When I first started sanding those cattle horns I would get so much dust after a session I could not see the horn or its color very well. I would wash it off in water then leave it out by the sander. When I would come back the horn would be dried and cracked and looked worse than when I started. Now when I finish a sanding session if I want to see the horn I have a towel and just smear hand lotion all over the horn and wipe it off. It gives me a better idea or the color and what places need more sanding. I have been doing it quit a while. It seems to work great. This is not something I am going to regret down the road am I???? I am not putting a finish gloss on it with them. Just getting the dust off and hydrated so I can see what they will resemble when I get to buffing them.