Six inches of hair may be donated to organizations such as Locks of Love. Though not usable to make hair pieces for children, the shorter lengths may be sold to offset costs.
If a person desires to donate hair for making hairpieces for children who have suffered medical hair loss, the minimum length for such donations is 10 inches.
The Locks of Love website lists all restrictions and requirements for hair donations. It answers questions such as whether gray hair, bleached hair or dreadlocks may be donated. The site also notes other ways to help the organization through financial donations.