Synthetic FlavorsUpdated a month ago
Are chemical mixtures used in cosmetic products to create or mask a specific taste that may be ingested, such as lipstick. The FDA does not require the disclosure of individual ingredients used to create flavors. Many ingredients of flavors are associated with contact allergy.
Sources:
https://www.fda.gov/cosmetics/labeling/regulations/ucm126444.htm#clgl4
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3858659/
https://ec.europa.eu/health/scientific_committees/consumer_safety/docs/sccs_o_073.pdf
http://www.contactdermatitisinstitute.com/pdfs/allergens/Fragrance%20mix.pdf