Celeste Barber has revealed the secret behind her glowing complexion as she celebrated her 43rd birthday this week.

The Aussie funnywoman, known for mocking celebrity culture with her wildly popular parody videos, took to social media on Friday to share a candid clip with her followers – and to plug the latest product from her skincare line, Booie Beauty.

In the footage, Celeste was seen having a hydrating cleanser gently applied to her face as she beamed at the camera.

Her skin looks radiant and refreshed, proving she practices what she preaches when it comes to ageing gracefully.

'I turned 43 on Tuesday and I spent a fair amount of time looking at my face in the mirror,' Celeste wrote in her caption. 

'A) because I was testing new products and B) because I'm really grateful for my face and for the lines on my face and I wanted to make sure I kept reminding myself that I’m excellent just as I am.'

Celeste, who launched Booie Beauty just 10 months ago, said she's proud of the community that’s quickly formed around her brand, which champions ageing with confidence and humour.

'If you haven’t already, check out @booiebeauty,' she urged fans.

'It's all about bringing out the best version of you, and celebrating the excellent faces we have as they grow older and wiser and a little more pickled.'

She also revealed the brand had launched a 'super sexy hydrating cleanser' on her birthday, with more products in the pipeline over the coming months.

'I'm proud as punch of the community we have already created in 10 short months. You guys are the t**s,' she added cheekily.

She joked one of the benefits of her beauty product is that it would 'make it look like you actually slept.' 

Celeste is known for mocking models and celebrities, and is currently touring her latest stand-up comedy show across Europe.

In July, Celeste moved into the beauty space by launching her own affordable makeup brand.

Since launching, it has been a hit, with some items already sold out on the brand's website.

Among the offerings are the Where The Hell Is My…? Nourished Lip Stick in three colours for $28 each.

Also on sale is the Bam! Bam! Bam! Lip, Cheek and Eye Tint in two shades for just $22.

In 2021, Celeste appeared on The Project and revealed that desperate influencers and celebrities often contact her begging to be parodied.

'Yep. Heaps,' she said when asked if anyone had asked to be featured on her profile.

'I also get people going, "Have you seen seen so and so? You need to parody her. She needs the followers." It's full on,' she added. 

However, Celeste has also made friends with some big names after mocking them.

'I am friendly with some of them, which is nice,' she said.

Celeste then cheekily added: 'Anyway, I was talking to Cindy Crawford and she said...'