Solid lanolin with no modifiers or water added... it's as pure a lanolin as you can get, complete with the natural sheepy scent.
Grade is USP pharmaceutical.
Use approx 1 tsp in very hot water to melt it down, add a bit of liquid baby soap or a piece of your favorite wool wash bar/emulsifier, and mix well very well until you have the color of whole milk. Add to your water bath and soak woolies for approx 30 min. or longer.