Kim Kardashian uses this £8 serum to help keep wrinkles away.

Kim's skin always looks flawless
(Image: Getty Images North America)

The bargain retinoid serum from The Ordinary is already looking like it's going to sell out after the reality star named it on her website.

Kim Kardashian's known for her love of designer clothes and accessories, but it seems the one thing she's happy to save on is her serum.

You might think she'd be using some sort of gold-flecked formula, but no, the blonde beauty has been using The Ordinary's Granactive Retinoid Emulsion, £8 .

On her website, Kimkardashianwest , the 37-year-old revealed that she's been using this retinoid serum to help her fight wrinkles, in a post titled 'How I slow the aging process'.

By Zoe Cripps.

Full story at Mirror.