While some seven-year-olds would cry at the thought of losing hair that length, Kayley smiled as she held her 60-centimetre pigtails at a Wanniassa salon on Wednesday.

The Farrer girl raised almost $2000 in two weeks for Variety's Princess Charlotte Alopecia Program, which goes towards the making of wigs for people who have lost their hair.

Alopecia areata is a condition resulting in hair loss, usually from the scalp, and has no known cure.

While affecting all ages, it can be caused by psychological stress in children and lead to social phobia, anxiety and depression, Variety reports.

Kayley's mother Amey said her daughter had only ever had her hair cut twice, both times with the slightest trim.

But she was only "a little bit scared and mostly excited" when the hairdresser at Azure Hair and Beauty brought the the scissors over to her chair.

"I'm getting my hair cut off to make it into a wig to help other people around the world," she said proudly.

After the big chop, she giggled and said "I'm happy because I feel good for helping other people."

Inspiration came from her cousin Abbey (also seven), who decided to grow her hair specifically to cut it off and donate it.

Kayley's mother was shocked and relieved at her decision to follow suit.

"We have been wanting her to cut her hair for a while now, as she's grown it her whole life and it's long enough to hang in the toilet," Mrs Bencke said.

"We were quite happy when she said she wanted to do this, because it's a lot less maintenance but it also means that another child is going to get that gift of self-confidence."

While amazed at the money Kayley had raised so far, Mrs Bencke said custom weaves could cost up to $5000 - which is Kayley's goal.

"She just lights up every time someone donates on the website and thanks everyone individually," Mrs Bencke said.

Straight after the cut, Mrs Bencke checked how Kayley was feeling. Kayle's response was that she wanted her hair to grow back... so she can donate it again.

"I was thinking, maybe in seven years," Mrs Bencke joked.

To donate to Variety's Princess Charlotte Alopecia Program, visit Kayley's everydayhero page: https://alopecia.everydayhero.com/au/kayley