Use bleach in a spray.

How to make bleach dye heart. Using glue, stick the cork to the triangle to make a stamp. Dilute the bleach with water, 50% ratio. This may take a bit of practice.

Here are link to the things i mention in the video :bleach stop :: Let the dye work its magic overnight for the most vibrant. How do you tie dye a heart with bleach?

Be careful with thinner fabrics! If using a washable marker, dampen your item before. Put it aside for a minimum of six to eight hours.

Tie rubber bands around the circumference of the shirt to secure it firmly in place. Let set for 20 minutes or until the color lifts. Use a paint brush or pouncer to coat the bleach gel over the stencil.

Squish the shirt and press it to make sure the bleach goes everywhere. Depending on the cloth, it may take shorter or longer. Then ring it out so its wet but not dripping.

If they can fold a shirt, they'll have no problem perfecting. Next tie off the tourniquet in a half knot then place a stick or rod on top and tie a full. Carefully place the shirt in a plastic grocery bag and tie the bag closed.