The age-defying cream, often described as a 'natural alternative to Botox' has been endorsed by the Duchess of Cambridge's personal makeup artist, Carl Ray.

Ray has worked with various members of the Royal family and considers the cream as one of Kate's essential anti-ageing skincare items.

The popular wrinkle-reducing cream is Biotulin Supreme Skin Gel, and claims to deliver visible results within just 60 minutes, and maintain its effect for up to nine hours.

Usually priced at €45.02 the gel has been discounted by 26% to €33.47 for a limited time.

The game-changing product aims to decelerate muscle contractions and relax facial features using spilanthol, a natural extract known for its ability to soften expression lines.

Biotulin's Supreme Skin Gel also boasts hyaluronic acid to volumize and hydrate the skin.

The brand also assures that the gel can achieve up to a 25% reduction in wrinkles within an hour of use, without compromising facial expression or causing numbness.

The gel allows your face to retain its natural animation and beauty, unlike injectable treatments.

The product has received thousands of reviews from Amazon customers who have tried and tested the skin gel, which should give us a better idea of what to expect from the sought-after skincare product.

One customer raved about the gel, saying: "This really is amazing! It does exactly the same job as botox in a skin gel. I cannot believe how good this is. I love it. The best product I have ever used. I would highly recommend this. I will never stop using it! A real breakthrough."

Somebody else echoed this, writing: "I am 65 years young. The only place I have deep wrinkles is around my mouth/nose area. Since using Biotulin I have notice that they are not so prominent."

Another said: "Lovely product, so smooth and norushing skin feels wonderful."

In a more mixed review, one customer said: "This is not a magic pot and your loved ones won't see the difference. But if you know your skin very well, you will probably see a slight improvement. I like it, I will buy it again, it's OK as long as you don't expect somebody to tell you, that you look 10 years younger."

And another said: "Can't say it's as good as Botox but really love this product and makes my skin tighter and fresher looking."

Some noted the size of the bottle, but one happy customer said: "My first one I purchased in October & only run out in July as you only need to use a tiny amount, so good value for money."

You can shop the Biotulin Supreme Skin Gel used by Kate Middleton from Amazon here.