Excellent adviceDubbin contains wax, and while it may make it sticker initially it can also make the surface slicker as the carrier evaporates and wax hardens, it will also make it more difficult to add oil/hydration later. Dubbin is for waterproofing boots.
Use oil, but sparingly, I use neetsfoot and olive oil.
When applying oil wet the strop face with a damp, clean sponge or paper towel. Wait 10-15 minutes then apply your oil rubbing into the leather. The water opens the pores and allows the oil to penetrate deep into the leather. It can take day or a week or so for the oil to evenly penetrate all the leather. So, do not add more if it appears blotchy, it will even out with time.
Making the leather feel slower, grabbier does not improve the finish on the razor, more important is the cleanliness of the strop and technique.