To use these men's shirts, simply put them on and enjoy their comfort. When it's time to wash, turn them inside out and put them in the washing machine on a cold cycle with similar colors. Only use non - chlorine bleach if necessary. After washing, you can hang them to dry for the best results, or use the cool/low heat setting in the dryer. Avoid using fabric softener as it can cause fading. Also, don't iron or dry clean these shirts to keep them in good condition.