The lowdown: After touching or removing your mask, wash your hands with soap and water for at least 20 seconds or use hand sanitizer with at least 60% alcohol. Learn from CDC about How to Select, Wear, and Clean Your Mask. CDC recognizes there are specific instances when wearing a mask is not be feasible. In these instances, consider adaptions and alternatives. And in case you’ve misunderstood, even with a mask, you should stay away from everyone: A mask is NOT a substitute for physical distancing. Masks should still be worn in addition to physical distancing. Wearing a mask is especially important indoors and when physical distancing is difficult to implement or maintain while providing care to young children.