Bergamot (Essential Oil) Contraindications
Bergamot essential oil should not be used as a leave-on topical product on sun-exposed skin due to psoralen/furanocoumarin phototoxicity. [1] Bergamot essential oil use should be avoided during pregnancy and lactation because safety data are lacking. [2] Oral ingestion of bergamot essential oil should be avoided because internal use has been associated with adverse effects and is discouraged. [2]
Photosensitivity and Phototoxicity Restrictions
Bergamot essential oil contains furanocoumarins (eg, bergapten) that can cause phototoxic reactions after UVA exposure. [1] Leave-on application to skin with subsequent sun/UVA exposure is contraindicated in practical product-safety terms due to this phototoxic potential. [1]
Pregnancy and Lactation Contraindications
Bergamot essential oil should be avoided in pregnancy because safety and efficacy information is lacking. [2] Bergamot essential oil should be avoided in lactation because safety and efficacy information is lacking. [2]
Internal Use Contraindications
Internal use of bergamot essential oil should be avoided due to reports of adverse effects with ingestion and general discouragement of oral use of essential oils. [2]
Product-Type Contraindications (Leave-On vs Rinse-Off)
Leave-on topical products containing bergamot essential oil should be limited on sun-exposed areas because of phototoxic risk (IFRA-type restriction concepts). [2] Rinse-off products are treated differently from leave-on products in product-safety recommendations because risk is primarily linked to skin exposure during UVA/light exposure. [2]
Exposure-Route Contraindications
Aerosolized exposure with subsequent UVA exposure can contribute to phototoxic reactions and is a practical contraindication for safe use scenarios. [2]
Safety-Relevant Clinical History Contraindications
A history of phototoxic or photo-induced dermatitis after exposure to UVA in the presence of photosensitizing agents is a clinical indicator to avoid bergamot essential oil. [1]
References for Contraindication Basis
Bergamot essential oil phototoxicity is attributed to furanocoumarin constituents and their activation by UVA. [1] Bergamot essential oil contraindications related to pregnancy/lactation and discouraged internal use are described in clinical safety summaries. [2]