"We all hear of breast cancer, but you never really hear of bowel cancer. I only know about it because my grandmother died of it."
New Zealand has one of the developed world's highest rates of bowel cancer.
It is the country's most commonly registered cancer, with more than 3000 cases a year. And with about 1200 deaths a year, it is our second most common cause of cancer death, behind lung cancer.
Ciara's fundraising efforts will include speaking to a school assembly about bowel cancer and setting up a Givealittle internet donations page. The money will go to Beat Bowel Cancer Aotearoa, a charity which supports patients and is lobbying the Government to extend the Waitemata District Health Board bowel cancer screening scheme into a national programme.
Ciara said some of her friends thought she was crazy to be planning to have her hair cut off.
"My age group it's all about image, but a lot of them are quite supportive - and some say, 'I would die for your hair'."
Ciara's mother, Sue Maher, said Mrs Barclay would have turned 72 on December 6 had she still been alive.
"I said [to Ciara] she would have been so proud of you."
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