Terpenes and terpenoids, turpentine-oil residues
At a glance
A byproduct terpene fraction left over from turpentine oil processing, dominated by pinene and related compounds, giving a piney, earthy, resinous character used as a raw material for synthesizing other aroma chemicals like camphor and terpineol.
Why synthetics aren't a downgrade, a different toolkit โ ยท Why some materials get IFRA-restricted โ