Can you hand wash a 100 percent viscose shirt?

if the care label says you can wash it you can. if it says dry clean only then don't wash it or it could fade or shrink. if you do hand wash it don't put it in the dryer, let it air dry and if you need to get wrinkles out be very careful because if the iron is too hot it will melt your shirt. viscose is a type of polyester.