
Uncovering celebrity beauty secrets is always a thrill, but finding out that one of our favourite A-listers' everyday serum costs less than a tenner feels like hitting the goldmine.
Scarlett Johansson always has flawless skin, so it's only natural to assume that she spends a pretty penny up-keeping it. But the truth is, one of her go-to hydrating serums won't even set you back £10.