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From clear skin to detoxing, chlorophyll and collagen supplements promise a lot, but what does the science say?

By Dan Baumgardt, Senior Lecturer, School of Physiology, Pharmacology and Neuroscience, University of Bristol

Chlorophyll can’t ‘oxygenate your blood’ and collagen creams don’t magically erase wrinkles. But there is some science behind the hype.

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