I am shaving my head on May 8!
After chopping it off, I'll send my blonde locks to The Little Princess Trust, who will make them into a wig for a child.

But I there's more:
The wigs Little Princess provides are free to children.  However, the cost to the charity to purchase one wig is on average £350.  Any amount of fundraising that we can generate is welcome, to help them to provide wigs to both boys and girls throughout the UK and Ireland that have lost their own hair through cancer treatment.
(source: www.littleprincesses.org.uk)

Donating through JustGiving is simple, fast and totally secure. Your details are safe with JustGiving – they’ll never sell them on or send unwanted emails. Once you donate, they’ll send your money directly to the charity. So it’s the most efficient way to donate – saving time and cutting costs for the charity.