<http://webisa.webdatacommons.org/prov/317778169> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/253278735> . <http://webisa.webdatacommons.org/253278735> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/253278735> <http://www.w3.org/ns/prov#value> "Retinal and it derivatives have also been found as useful in the treatment of such conditions as wrinkles, warts, psoriasis, eczema, dandruff, and the like (see EP-A2-0 391 033)." . <http://webisa.webdatacommons.org/253278735> <http://www.w3.org/ns/prov#wasQuotedFrom> <freepatentsonline.com> .