Cinnamic aldehyde (or cinnamaldehyde), a clear, oily liquid that varies from a pale to dark yellow in appearance has a robust odor strength, showcases a captivating aroma that recalls cassia, cinnamon bark, and fiery red hots. Revel in the powerful longevity of this ingredient, with an impressive substantivity on paper that stretches to 212 hours. We recommend experiencing its full depth and complexity through a diluted solution of 10% or less.