Mr Hartley was diagnosed with acute lymphoblastic leukaemia in 2018 - a disease that caused him significant muscle and body mass loss, as well as exhaustion as his body went through treatment and battled the disease.

RELATED: 'One of the lucky ones' - Youngtown man's leukaemia battle

With the battle still ongoing, Mr Hartley received significant aid from the Leukaemia Foundation, who assisted in establishing accommodation and other support mechanisms during his time in hospital both in Tasmania and interstate.

Wanting to give back, Mr Hartley shaved his head as part of World's Greatest Shave, alongside his friends.

"The boys got shaved," Mr Hartley said.

Mr Hartley described the mood at the barber shop as emotional.

"Having my mates there doing it alongside me made it all feel pretty special," he said.

"I feel very privileged to be calling these two mates at the moment, they're both legends. It was quite a nice feeling to think your mates would do that to help a cause you're so passionate about."

Friend Tom Jackson said he was walking the dogs with Mr Hartley one day when the World's Greatest Shave was mentioned.

"Daniel said he was going to do it, even though he'd only just gotten his hair back, and it seemed like a really nice thing," Mr Jackson said.

"I thought it was only hair so I'd jump in on the cause. I was with Daniel alongside the journey, I visited him in Melbourne and saw what the Leukaemia Foundation did for him, and I was glad to jump on board and raise money to help people like that.

"We made a team, and I started harassing people for their money."

Josh Martin cut off more than 10 years of hair growth - including his ponytail - to be donated towards making wigs for people who have lost their hair due to treatment.

It was the first time his partner Laura had seen him without shoulder length hair.

"I've definitely had it long since high school, and haven't had it cut for about four years," Mr Martin said.

"I always liked the idea of doing the World's Greatest Shave, and having someone like Daniel - he's one of the nicest blokes going and the first to help you out if you need a hand.

"It was getting quite unruly, and now I'm finding it quite cold - I find myself touching my head a lot at the moment... the dogs didn't recognise me for a few minutes when I got home, and got some strange looks at work last night - a lot of people thought I was the new guy until I walked up close."

The trio undertook the shave with a goal of raising $9000 - and to date have raised more than $8000.

"To raise what we have is beyond what we expected, we've had some amazing people donate amazing sums of money," Mr Hartley said.

"I have so much gratitude and appreciation knowing what this money is going to do for families like mine going through this, it's an incredible feeling."

To donate to the team, visit https://bit.ly/2OlHvJP.

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