First off Ya gotta let everyone know that Castle Forbes is the best cream there is ...Period !!!!!
Keep in mind that I rarely ever use just cream or just soap to lather, but here's a trick I use for the CF that seems to work for it.. I take the Snurdle of cream and put it in the lather bowl, and kind of smear it around the bottom with my finger then let that sit in the hot waterand warm up while I shower, the warming bowl softens the CF and and make it accept the brush a little easier... Also I tend to do a little more swirling with the brush tips before actually trying to build the lather that seems to really work...