Wash at 30-40C or cold wash (with the printed side turned inside) on medium wash cycles (600-800 rpm for 30 minutes to 1 hour). Do not place the already washed wet shirts for a second wash cycle once you take them out.
Using a dryer is not recommended, as high temperatures can affect the print. Keep the printed side inside when exposed to the sun. Sunlight affects the vibrancy of the print and causes color fading due to photodegradation.