'I use a sagging eyelid serum sparingly - but have seen good results on lines in 4 weeks'

Beauty buffs who 'swear by' retinol to target sagging eyelids and puffiness insist they've seen 'rapid results' from a £24 Medik8 serum. The serum uses science to help encourage collagen production and prevent its breakdown, for more youthful-looking skin over time. Medik8's Intelligent Retinol Eye TR has been designed with sagging, puffy and tired eyes in mind.

The supercharged serum has been created to soften visible signs of ageing around the eyes using Medik8's high-performance retinol formula. At £24 Medik8's Intelligent Retinol Eye TR won't break the bank, with many shoppers insisting a little goes a long way. It's enhanced with climbazole (a proven retinol booster), and Medik8's Time Release technology.

READ MORE: ' I'm a doctor and have used the same skin plump serum for a year - it's literally Botox in a bottle' READ MORE: 'I'm 55 and I've used the same anti-ageing serum for years - my skin's better than it was in my 30s' The fragrance-free formula promises to effectively improve the appearance of skin texture and minimise the look of fine lines around the eyes. Daniel Isaacs, Medik8's Chief Product Officer explained the science behind the product. He said: "When retinol is applied to the skin, it is converted to retinoic acid (the active form of vitamin A).

This active form helps to support collagen production and prevent its breakdown, for more youthful-looking skin over time. "It can also help reboot the skin’s natural exfoliation cycle to improve the look of .