Cinnamon Can Cause Contact Dermatitis
A quick Google search will bring up a plethora of DIY cinnamon masks and exfoliants. The spice’s sudden popularity comes down to the antimicrobial properties found in cinnamon, which can be effective at killing certain bacteria responsible for acne. However, facialist Andy Millward warns that cinnamon’s active ingredient, cinnamaldehyde, is highly irritating and can lead to contact dermatitis.
In low doses, it’s unlikely you’ll react, but that also means the cinnamon is probably doing little to fight bacteria. Since many cinnamon facial routines also call for honey, the antibacterial benefits are likely coming from the sugary ingredient, not the cinnamon.
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