The allergen ontology contains contact allergen info about ingredients of non-food products according to information from the FDA web page: https://www.fda.gov Its allergens and classes are linked to the Ingredients ontology as well as https://www.wikidata.org, http://www.productontology.org, https://www.ebi.ac.uk/chebi/, https://bioportal.bioontology.org/ontologies/NDFRT/, https://go.drugbank.com/
A contact allergen is an ingredient of a product that can cause allergic reactions - most likely skin conditions like contact dermatitis. The ingredients listed in this category are taken from the FDA website (https://www.fda.gov/cosmetics/cosmetic-ingredients/allergens-cosmetics)
"Phtalat"
"Phtalate"
"Bleichmittel"
"Bleach"
"Desinfektionsmittel"
"Disinfectant"
"Duftstoff"
"Fragrance"
"Latex"
"Metal"
"Metall"
"Mineralöl"
"Mineral_oil"
"Paraben"
"Konservierungsmittel"
"Preservative"
"Surfactant"
"Tensid"
"Toxin"
"Giftstoff"