I personally haven't used the Sullivans dye, but have seen others use it with varying results. If the Revlon you're getting is Young Color II black, then the only reason I know of you're still not getting them black would be that you're just not using enough. Figure on a minimum of 6 bottles for a 1000# - 1200# calf, more if they have much red tinge to 'em. We don't actually use sheen in the process at all. I mix two bottles of dye in a quart spray bottle, and fill it 1/2 - 2/3 full with warm tap water (helps it mix easier and more uniformly) and apply that to one side of the calf, brushing it in after each coat. Repeat on the other side, then split the third spray bottle between the two sides. When the bottle gets low enough it doesn't want to spray, pour the remaining contents down the calf's top and brush it in. If it's warm, put 'em in the shade under a fan (or two) and let 'em dry completely, then rinse thoroughly. If it's cold, you'll want to blow on 'em. I try to let it set for an hour before I rinse it out. I'm not saying this is the only way to do it, but it's just the best way I've found. I have tried some various other dyes, and I haven't found anything else that works nearly as well. I know it's hard to find sometimes, but I always get mine from Blue Ribbon Show Supply.