safety razor 
noun
A razor with a guard to reduce the risk of cutting the skin.One measure for preventing SSIs has been to remove patients' hair in the surgical field via a safety razor....
- The safety razor did not appear until the beginning of the 20th century and from then on, of course, anyone could adopt the style of the bourgeoisie just as anyone, eventually, could aspire to affluence with an off - the - peg suit.
- The safety razor is believed to have been invented by a Frenchman, Jean-Jacques Perret.