It contains a compound called cinnamaldehyde, which is responsible for cinnamon's medicinal properties (1). (alivebynature.com)
In 2012, topically applied cinnamon was demonstrated to significantly increase collagen levels in human skin, thanks to its signature compound cinnamaldehyde. (supernaturalacnetreatment.com)
Not only does it quench the burn of oxidation, it is actually activated by oxidation so the compound can interact with the cysteines on the tau protein in a way similar to the protective action of cinnamaldehyde. (sciencedaily.com)