While in most circles Karina Irby is known as the body-positive creator and CEO of the Moana Bikini line, the 28-year-old has also gained fans because she is not afraid to talk about her struggle with eczema.

And now, the Port Macquarie native has come clean about how she has completely transformed her eczema-prone skin in just three weeks.

The designer shared a before and after series of her legs, showcasing the incredible result of her self-titled therapeutic 'unicorn baths'.

Taking to Instagram stories, Karina explained how it took just two ingredients and some warm water to clear up her eczema.

Bikini designer Karina Irby (pictured) has come clean about how she has completely transformed her eczema-prone skin in just three weeks

'I can't believe I'm even publicly posting this,' Ms Irby previously posted, alongside a photograph of her legs before and after using the crystals (before and after)

'I have to soak in a bath whenever I can to help kill the natural bacteria I have on my skin,' Karina wrote.

'For people without skin conditions it's fine, BUT bacteria and natural staph can cause flare ups for my eczema.

'I have to try and keep m natural bacteria to a minimum.'

The first addition to Karina's bath is pure coconut oil, which she says keeps her skin hydrated.

According to the bikini designer (pictured), potassium permanganate crystals, which you can 'pick up from your local chemist for less than $20', could be the answer

The most important ingredient is potassium permanganate, a chemical compound which kills bacteria on the skin's surface as well as in cuts and burns.

'You only need a tiny little bit [of potassium permanganate] – the goal is a soft pink bath.

'If it turns purple, you have done too much and it can turn your nails pink,' she cautioned.

The most important ingredient is potassium permanganate, a chemical compound which kills bacteria on the skin's surface

According to the bikini designer, potassium permanganate crystals can be picked up from your local chemist for less than $20.

Karina recommended soaking in the solution for between 10 and 20 minutes, and added there is no need to wash off after use.

'Just moisturise yourself and get on with your day or evening – done!

'I hope this helps a few of you too.'

Karina recommended soaking in the solution for between 10 and 20 minutes, and added there is no need to wash off after use

It's not the first time the businesswoman has documented her struggle with the skin condition on social media.

'I can't believe I'm even publicly posting this,' she previously shared, alongside another photograph of her legs before and after using the crystals.

'This is a big deal for me and I even contemplated NOT sharing my three week eczema transformation out of pure embarrassment.'

However, in spite of her shame, the 28-year-old said she decided to because of her own experience as a teenager, 'struggling with my skin', without any help.

'I would have killed to have seen another human talking about eczema, so that's exactly what I'm going to do here,' she said.

Karina (pictured) said that while originally she was too embarrassed to post the photograph, she quickly thought back to her teenage years and decided that she needed to help others

What is potassium permanganate? * Potassium permanganate is a common chemical compound that combines manganese oxide ore with potassium hydroxide. * It was first developed as a disinfectant in 1857. Since then, it's been widely used to treat a variety of skin conditions, including fungal infections. * When applied to your skin, potassium permanganate kills germs by releasing oxygen when it meets compounds in your skin. It also acts as an astringent, which is a drying agent. * Some of the conditions that it can help include infected eczema, open and blistering wounds and athlete's foot. Source: Healthline Advertisement

Karina went on to say that she was 'recently educated by a clinical dermatologist' who told her that she had allowed her eczema to 'evolve into a chronic, severe condition'.

'I was pretty upset and shocked that I'd let that happen,' she said.

'Honestly, I was just uneducated and didn't know how to treat my skin properly.'

For the past three weeks, the bikini designer said that she has been soaking her legs for 10 minutes every morning and evening in potassium permanganate crystals.

She said that 'this apparently kills any bad infection in the skin that's keeping my eczema from healing properly'.

Concluding her post, Karina wrote: 'I hope by me showing off my experience I can help shed a little light for others who after suffering.'

Since she shared the photograph on Instagram on Friday morning, the bikini designer (pictured) has received a wave of support, with others saying they can't wait to try the crystals

Since she shared the initial photograph on Instagram in late August, the bikini designer has received a wave of support, with others saying they can't wait to try the crystals.

'Wow! That's a huge difference. And thank you for sharing your story. Two out of my three children have eczema and I'm always searching for and trying new things to ease their pain,' one mother posted.

'LOVE potassium permanganate for pompholyx eczema on my hands,' another added.

'It does stain my skin a tan colour but love that you only need a tiny bit. Apple cider vinegar soak also helps a tonne.'