title: Long-term efficacy of collagen.
abstract: The criteria for assessing efficacy and the factors that affect the long-term persistence of collagen injection are discussed. The response obtained will depend on the type of lesion that is treated. It is important to provide full information for the patient before treatment to ensure optimal patient satisfaction whatever the objective response may be.
authors.forename: H
authors.initials: H
authors.lastname: Tolleth
mesh_terms: D000152:Acne Vulgaris / Q000628:therapy; D000375:Aging; D001284:Atrophy / Q000628:therapy; D003094:Collagen / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D007267:Injections; D012867:Skin / Q000473:pathology
chemical_list: D003094:Collagen