With there being so many anti-ageing beauty products on the market, it can be overwhelming choosing which one to spend your hard-earned cash on. Debenhams may have the answer, as the retailer is selling a serum that shoppers are full of praise for – and it’s currently on sale.

Kiehl’s Retinol Skin Renewing Daily Micro-Dose Serum usually costs £50 for a 30ml bottle and £72 for 50ml, however you can now add the product to your skincare routine for £40 or £57.60, depending on the size you…