One or a blend of volatile and/or fragrant plant oils (or synthetically derived oils) that impart aroma and odor to products. These are often skin irritants (Sources:
Dermatology, 2002, volume 205, number 1, pages 98–102;
Contact Dermatitis, December 2001, pages 333–340; and
Toxicology and Applied Pharmacology, May 2001, pages 172–178).
See
volatile oil