Known best for her love of great sunscreens, beauty and skinfluencer Hannah English uses her science background to offer tailored advice and specialised reviews to her followers.

Welcome to #BetterRecommends, a series where we share the hottest books, podcasts, exercise regimes and more.

At some point in time, we’ve all been told that 8 cups of water a day is the magic amount to achieve optimal hydration, but how accurate is this claim?