Abietic acid, an abietane diterpenoid, inhibited soybean 5-lipoxygenase with an IC50 of 29.5 ± 1.29 μM.Abietic acid acts as a PPARα/γ dual activator to inhibit UVB-induced MMP-1 expression and age-related inflammation by suppressing NF-κB and the MAPK/AP-1 pathway and can be a useful agent for improving skin photoageing. Abietic acid can be used not only for anti-inflammation but also for regulating lipid metabolism and atherosclerosis. Abietic acid is an abietane diterpenoid that is abieta-7,13-diene substituted by a carboxy group at position 18. It has a role as a plant metabolite. It is a monocarboxylic acid and an abietane diterpenoid. It is a conjugate acid of an abietate.