Bergamot oil is considered non-toxic, yet it does contain bergaptene, a constituent that can be phototoxic and therefore skin should not be exposed to excessive amounts of direct sunlight for 72 hours after topical application. Further, Bergamot oil is recommended for use at low concentrations (3% or less in carrier oil), as it can irritate the skin. If pregnant or breastfeeding, consultation with a physician is recommended.
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