Originally Posted by
holli4pirating
Oild may change things too. IIRC, it coats the hairs and makes them more difficult to cut. I believe this is why lather is made from soap, which removes the oil, and it is commonly recommended to wash your face before shaving. As for preshave oils - that has always been a mystery to me. The long and the short is, any change from your normal routine could resutlt in a change in how the razor shaves and how the shave feels; this is not inherently bad, but if it happens during a test you need to "adjust" for it (mentally) as you assess your edge. Or maybe I'm just overly worried about variables....