Clinical Evaluation of T.R.U.E. TEST® Fragrance Mix and Thimerosal Allergens:Bioequivalence of PVP Formulations

Inclusion Criteria: * Current or previous symptoms and/or history consistent with allergic contact dermatitis, and positive patch test (within the past 5 years) to fragrance mix AND/OR thimerosal. * All subjects must be adults (18 years of age or older) and otherwise in good health. * Pre-menopausal female subjects must consent to a urine pregnancy test; results must be negative for study inclusion. * Informed consent must be signed and understood by each subject, and consistent with all institutional, local and national regulations. Exclusion Criteria: * Subjects unable to meet inclusion requirements. * Women who are breastfeeding or pregnant. * Topical treatment during the last 7 days with corticosteroids or other immunosuppressive agents on or near the test area. * Systemic treatment during the last 7 days with corticosteroids (equivalent to \> 10 mg prednisone) or other immunosuppressive agents. * Treatment with ultraviolet (UV) light (including tanning) during the previous 3 weeks. * Acute dermatitis outbreak or dermatitis on or near the test area on the back. * Subjects unable to comply with patch test study requirements including multiple return visits and activity restrictions (e.g., protecting test panels from excess moisture due to showering or vigorous activity). * Subject participation in clinical trials of investigational drugs, treatments, or devices, other than T.R.U.E. TEST, during this study or 3 weeks prior to inclusion in this study.