Gwyneth Paltrow's $60 'facial in a jar' exfoliator is selling like pancakes after fans backed claims by the actress, saying that the product has made their skin glow even hours after using it.

The Hollywood star claimed that her beloved product, 'Goop Glow', has left her skin 'softer, smoother, and more luminous afterward'.

'The results are instantaneous,' she said.

'After just a few minutes, it polishes away roughness and smooths uneven texture, revealing a glowing complexion.'

The actress’ claims are supported by 92 per cent of women who participated in the product’s consumer research, saying that after using the product, their skin barrier function improved — an important parameter for skin health.

The best-selling product, which is available at Goop, a company founded by the 49-year-old
actress, promises a physical and chemical exfoliation thanks to its air-whipped dual-action microdermabrasion formula.

The paraben-free product, which is packed with four powerful micro-exfoliating minerals such as quartz, garnet, alumina, and silica, also aims to polish skin, smooth uneven texture, and reveal a healthy-looking glowing complexion.

Goop Glow also contains glycolic acid — an agent which helps sweep away dry, dead skin cells that refine the appearance of pores, leaving a visibly softer and smoother skin.

Further, the product’s formula also contains Kakadu plum, a fruit that has 100 times more vitamin C than an orange. Vitamin C helps skin luminosity.

The actress also shared how to use the product in Goop's Instagram post, saying that you only need to massage the product onto your clean, damp skin in circular motions and rinse it off with warm water. The product must be used two to three times per week.

Aside from the Goop products, the 49-year-old actress revealed that her secret to maintaining her healthy glow is a combination of a nightly Japanese whisky, paraben-free products, daily exercise, good sleep, and a predominantly 'clean' diet.

'I certainly don't eat clean for every meal - I love French fries and Japanese whisky - I [do, however] find that wholefoods are transformative for my energy levels and good skin,' Gwyneth said.

She also added that she drinks a small amount of Japanese whisky every night.

Gwyneth also revealed that has three litres of water every day and a bath with Epsom salts — both of which help improve skin health and relaxation.

Other products she uses for her skincare routine are the GOOPGENES All-In-One Nourishing Face Cream, $152, and the GOOPGLOW 15% Glycolic Acid Overnight Glow Peel, $72.

'These intense exfoliating overnight acid peel pads do all of the work to refine, re-texturise and brighten skin while you are sleeping,' Gwyneth told the publication.

'In the morning, you wake up refreshed with glowing, radiant skin.'

Goop products are now available in Australia via beauty store Mecca.

Will you give this product a try? Tell us in the comments below.