How do I make Tabac cream 'slipperier'?

I really like CO Bigelow cream, and took others recommendations to try Tabac cream for something different. I really like the way the Tabac lathers, it's fregrance is lovely too, but every time I use it my razor enevatably skips and Knicks my face. Ive tried pre oils, and while they do work, they seem to kill lather when scrubbing with the brush. Are there any recommendations for an additive to put in Tabac to make it slipperier more like CO Bigelow?

Try a couple of drops of glycerin

I also bought the cream but never use it alone (find it lacking by itself, compare to the soap). I use it to über lather with tabac soap. It makes for a very creamy and slick lather. Double O

Try a little more water?