I’m an avid down under shaver. Have been for the last 15 or so years. I use a standard razor and shaving cream.
One thing to note, for anyone that may partake in an undraped massage, don’t shave immediately prior to the visit. In fact, shave a few days prior to your visit. Little nicks/cuts, even invisible to the eye, are entryways for unwanted, sometimes permanent side effects.