By Amy Hunt
A serum is the perfect addition to your skincare regime - giving you an array of skincare benefits, from firming, to the reduction of redness and blemishes.
And if you're looking for one to add into your routine, look no further than this £21 one from Pestle & Mortar.
The beauty brand's Pure Hyaluronic Serum, £21, has been making waves in the industry recently, for its hydrating and fine line-targeting properties.
In fact, it's proven so popular that it's sold out five time worldwide in the last 12 months, with customers desperate to get their hands on it. You can buy the serum here.
And beauty fans are so keen to get it for their bathroom cupboards, that each time it sells out, a wait-list of around 35,000 shoppers accumulates, full of shoppers wanting to hear about when the serum will next be available in stores.
It's easy to see why customers are going so crazy for the serum too.
Not only is it affordable, but it's lightweight and fragrance-free formula helps ensure it won't irritate sensitive skin, as can be the worry with potent serums.
Of course, it contains the beauty ingredient of the moment, hyaluronic acid, which claims to "diminish fine lines and wrinkles", and it also promises to plump up your skin and create a firmer complexion in the process.
But that's not all. The serum can also be used as a make-up primer, providing the perfect base for your daily face.
Pestle & Mortar recommending applying it both morning and evening for the very best results.
Customers who have been lucky enough to pick up the serum already have been sharing their thoughts about it on the website - and it's pretty overwhelmingly positive.
One convert wrote, 'Best serum I have ever used. Magic in a bottle . Love it !', while another agreed, saying, 'Since using this product my skin is totally hydrated and fine lines have diminished. Love this product'
And a third commented, 'Has honestly had a remarkable effect on my skin. I have a fab glow after using it for the last few weeks.'
If you're looking to get your hands on it, you can pick up the serum online at retailers like LookFantastic, Feel Unique, and Harvey Nichols.
Sarah Jessica Parker and JLo's favorite reusable face mask has sold out 14 times
Even better? You can currently snap up more than 20% off the usual price tag
By Lucy Abbersteen •
A look at Highgrove House, Prince of Charles and Duchess Camilla's stunning Cotswolds retreat
Everything you need to know about Highgrove House, the home of Charles and Camilla
By Laura Harman •
How to shape eyebrows like a pro (no appointment required)
Learn how to shape eyebrows, whether they're full and bushy or fine and sparse. Our expert advise has you covered
By Jess Beech •
Le Volume Stretch de Chanel review: a thoroughly modern mascara
A 3D printed wand and cool-girl separation make Le Volume Stretch de Chanel a true French fancy
By Fiona McKim •
Best bob hairstyles for women: from short to long lobs and curls
Get inspired for your next salon visit with the best bob hairstyles for every hair type
By Sibelle Mehmet •
The best ghd straighteners, as ranked by a beauty editor
Wondering which ghd straighteners to choose? We’ve got the ultimate guide to the best ghds, from basic to brimming with extra features
By Anna Lao-Kaim •
Michelle Pfeiffer reveals the secret to her youthful appearance
Michelle Pfeiffer's anti-ageing secret isn't a fancy face cream. Read on to find out more...
By Fiona Embleton •
The best mascaras for sensitive eyes: our favorite delicate formulations
For those with delicate eyes or skin, finding the best mascaras for sensitive eyes takes a little more care and attention.
By Ayesha Muttucumaru •
Cara Delevingne has ditched her signature blonde hair and is now a brunette
Cara Delevingne doesn't look like this anymore....
By Lucy Abbersteen •
Does wearing your hair in a side parting make you 'older'?
With Gen Z calling out side partings as 'old' , would you take the #MiddlePartChallenge?
By Fiona Embleton •