title: Part II: General Aspects.
abstract: In this second article on contact allergy to and chemical composition of essential oils, some general aspects of essential oils are kprovided, including what they are, their applications, their mode of production, factors influencing their chemical composition, analysis of essential oil, and quality aspects.
authors.affiliation: From *acdegroot Publishing, Wapserveen, the Netherlands; and †Gottfried Kellerstrasse Nördlingen, Germany.
authors.forename: Anton
authors.initials: A
authors.lastname: de Groot
authors.forename: Erich
authors.initials: E
authors.lastname: Schmidt
mesh_terms: D017449:Dermatitis, Allergic Contact / Q000209:etiology; D057168:Distillation; D004340:Drug Contamination; D006801:Humans; D009822:Oils, Volatile / Q000009:adverse effects / Q000032:analysis / Q000737:chemistry; D010938:Plant Oils / Q000009:adverse effects / Q000032:analysis
chemical_list: D009822:Oils, Volatile; D010938:Plant Oils