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 LED face masks are booming in popularity – despite being one of the most expensive at-home beauty products to hit the market. They claim to either reduce the appearance of fine lines, stop spots or calm redness, with some even combining different types of light to enhance the benefits. However, it’s