Do not iron
Turn the t-shirt inside out of ironing is necessary. Direct & long contact to heat damages the print causing it to peel
Avoid using bleach
The use of bleach or strong detergents might damage prints on a shirt like vinyl prints. Use mild detergents only.
Wash garment inside out
Give your tees an extra protection by avoiding direct contact of the shirt prints to other garments and t-shirts.
Do not tumble dry
The tumbling movement from the dryer could create wrinkles which will be hard to remove without heat.