Balsam Peru Très mauvais Extraits végétaux No known benefits Balsam Peru description Balsam peru is a fatty resin that when applied topically can cause sensitivity. It also has the potential to cause phototoxicity. Balsam peru is also a standard used in patch tests for skin sensitivity due to its high incidence of causing reactions. For more information, please see the _Copaifera Officinalis_ entry. Related ingredients: Copaifera Officinalis