I read a post rearding straigt shaving in Michigan recently and working in the medical field i though i would write a post regarding the risk. The issue of HIV/Aids was brought up but I will explain some facts. In my opinion barber shops must sanitize straights after every use. Most will be concerned about the obvious and most attention grabbing disease HIV. HIV is a very weak disease when exposed to air living only for an extremely short period in a droplet of blood when exposed to air. Of greater concern is the hepatitis family of diseases which has been found to live for weeks in a droplet of blood. So while most of us areconcerned with HIV transmission from a blade this is actually a much smaller risk than hepatitis due to their ability to survive when exposed to air. Obviously this does not mean that we should not be concerned just simply stating that the chances of contracting hpatitis is far greater than HIV in this particular case. Either way it is best to ensure that the barber uses a fresh blade even when doing the back of your neck as many will repeatedly use a blade until it is dull and throw it out. I have sat waiting for my turn and watched the barber use a blade twice before getting to me at which point i kindly asked that he pull out a new blade for me.