Brock Wotton, 12, has level three autism, sensory disorder to touch and sound, and severe anxiety.

But despite the difficulties, he is getting ready to shave his hair to donate to charity.

Brock said if his hair is long enough, he would like it to go towards making wigs for those with cancer or alopecia, but if it's not quite there, he's "super excited to donate it towards the hair nets that get used in the oceans to help soak up oil spills".

The 12-year-old's passion for animals and helping others has motivated him to overcome the fear of change he struggles with.

Brock's mum Cheryl Wotton said she couldn't be more proud of her son.

"Everyone loves Brock, he has amazing empathy and a generous heart," she said.

Wagga salon Lulu and Kit, one of only two 'sustainable salons' in the city, will be facilitating the shave on March 12, but in the lead up, Brock will be making frequent visits to make him comfortable with the environment.

As part of the Sustainable Salons initiative, Lulu and Kit's Kirsty Quach said they recycled 95 per cent of the business' waste.

"All of the hair gets swept up and used to make hair booms which mop up oil spills in the ocean, and can be reused multiple times," she said.

"We also collect ponytails which are donated to make wigs for cancer patients and people suffering from alopecia."

Ms Quach said the salon recycles up to 20 kilograms of waste every fortnight as part of the Sustainable Salon initiative, who help more than just the ocean.

"They actually hire people that are disadvantaged, and put a lot of money back into community projects and charities like Oz Harvest," she said.

"We're thrilled to be permanently a part of it now after trialing the system in Wagga last year."

In the two weeks since announcing he would be participating in this year's World's Greatest Shave, Brock has already raised more than $650, which has since jumped thanks to a generous donation from Wagga's Marketplace Woolworths.

Mrs Wotton works at the store, and said the team were only too happy to help support Brock's efforts.

Store manager Ryan Sytton said the cause was one close to his heart.

"I have a daughter myself, and family members who have had various health conditions, so a cause supporting Leukemia is fantastic and we're happy to be in a position to help," he said.

While the shave will be a big challenge for Brock, his support workers from Live My Way will be by his side.

Damian Doyle helps Brock "get through the day when things get a bit tough", as well as facilitating vacation care, school pick ups and respite, and Mrs Wotton said she wouldn't be able to do it without him.

"[Live My Way] provides support people to help Brock and his brother every day to live a more independent life," she said.

"With a family of four children, two with autism, with no family support, Live My Way are our lifeline."

To help Brock's cause, click here.