I used it for a while. Somersets shaving oil was a sponsor of the old Electric Razor Rap back a few years ago. When using it with my Philishave HS555 razor, the oil caused the decorative discs on my shaving heads to come off, but that was merely a cosmetic issue. It didn't affect shave performance. In fact, it enhanced it. More frequent cleaning was necessary, which wasn't a big deal, and now with the waterproof razors, it's even easier. I've never tried shaving oil on any of my foil razors, though, but, again, clean-up would be easier since they're all waterproof.