Medik8 Retinal 10 v Geek and Gorgeous Retinal 10: How does the budget serum compare?

In this review I’m comparing Medik8’s higher-strength retinal 10 with a same-strength but much cheaper retinal from European brand Geek and Gorgeous.
To put them to the test I used a different serum on each side of my face to see if I could note any differences.

Medik8 retinal 10 on Amazon UK: https://amzn.to/3qX9BvO
https://geekandgorgeous.com/products/a-game-10

My skincare favourites:
Cerave foaming cleanser Amazon UK https://amzn.to/3kljb8m US https://amzn.to/3rhGqBr
NuFace primer gel UK https://amzn.to/3xOL9NM US https://amzn.to/3hK0ZDN
NuFace Trinity UK https://amzn.to/3igyXyA US https://amzn.to/3esjfiS
La Roche Posay Hyalu B5 serum UK https://amzn.to/3z3KUON US https://amzn.to/3BeOmbc
Paula’s Choice Glycolic Acid 8% UK https://amzn.to/3wlz6XH US https://amzn.to/2UMM5DA
Cerave moisturising cream UK https://amzn.to/3klljgm US https://amzn.to/3wLAZvN
Paula’s Choice Youth Extending spf 50 UK https://amzn.to/2UPJsRB US https://amzn.to/3BcBkLt
La Roche Posay Anthelios Age Correct spf 50 at lookfantastic.com https://tidd.ly/3in9Pq9

I’ve written two fictional novels, From the Outside - a psychological suspense with a supernatural twist - and Polls Apart - a thrilling love story with a political backdrop - which are available here https://amzn.to/32WcK2X

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Edited by David at https://www.redfacilities.com