There are a lot of wonderful places that you can donate your hair for patients with cancer.
Pantene Beautiful lengths in a non-profit. Their hair pieces go to adults. Hair must be 8″ or longer. Info Here
Children with Hair Loss is another non-profit. They provide hair replacements free of cost to children. They donate to children with Cancer, Alopecia, Burns and other issues that cause hair loss. info here
The more well known site for Hair Donation is Locks of Love. Info here!
Wigs for Kids specializes in hair replacements for children. info here