Chris recommends machine washing it and hanging it to dry. For best results, it’s advised to not put the T-shirt in the dryer. If you choose to put your shirt in the dryer, that’s fine too. The design will not wash away.
Noosh!’s T-shirts are printed with oil-based ink. That means the print will not wash away; think of it as an organized stain. The ink is resilient and will not wash out, but some normal fading is to be expected as with any new T-shirt.
Some people still have original Noosh! T-shirts from over a decade ago that still look good! They’ve even shown up in thrift stores, still in great condition!