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

However, it’s wise to be sceptical about new treatments that are costly and non-invasive, and to do your research before you buy. With this in mind, I interviewed doctors and dermatologists to find out whether these light therapy devices work.

They’re not a miracle cure for deep-set wrinkles, but experts say the best light therapy masks can promote collagen production, improve elasticity and help smooth skin with sustained use.…