They claim to fix fine lines, blemishes and redness – but which stand up to scrutiny? We asked dermatologists and put them to the test to find out The best anti-ageing creams, serums and treatments ...

aHuman Nutrition, School of Medicine, Dentistry and Nursing, Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK bInstitute of Cardiovascular and Medical Science, Institute of Health ...