Medik8 Crystal Retinal before and after results (Image: Medik8) This article contains affiliate links, we will receive a commission on any sales we generate from it. Learn more Serums are the saviours in the world of skincare, offering more powerful ingredients than face creams. If you're dealing with fine lines and uneven skin tone, Medik8 launched a new addition to its anti-ageing retinol range this week - and it really packs a punch.

The Crystal Retinal 24 , normally priced at £109, has a potency that works 11 times faster than standard retinol to tackle concerns like stubborn wrinkles and dark spots. It is stronger than its predecessors - strengths 1, 3, 6, 10 and 20, which can be found at Amazon and Lookfantastic . This overnight formula promises age-defying results with firmer, clearer skin in just months.

What's more shoppers can get 20% off the product thanks to skincare buff and content creator Andrew Wheatcroft, who has teamed up with Medik8 to launch a one-day discount code: ANDREW20 . The offer is only available until 11.59pm tonight (August 31), so you need to be quick.

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