The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	A study of the functional stability of sunscreen compounds
Author:	Starkman, Jesse Howard
View Online:	njit-etd1956-019 ([9], 94 pages ~ 5.0 MB pdf)
Department:	Department of Chemical Engineering
Degree:	Master of Science
Program:	Chemical Engineering
Document Type:	Thesis
Advisory Committee:	Kreps, Saul I. (Committee chair)
Date:	1956-05
Keywords:	Suntan
Availability:	Unrestricted
Abstract:	Previous work reported in literature, indicates that commercial sunscreen compounds were subject to breakdown on exposure to ultraviolet radiation with consequent change in their functional efficiencies. These findings ware retested under conditions more closely approximating actual usage. A new method of evaluation which closely correlates to actual experience in large scale usage, was applied. This method provides, from simple spectral data, a reliable index of physiological efficiency of the sunscreen compound. As a result, twelve commercial sunscreen compounds were exposed to ultraviolet radiation for varying periods. Analysis indicated that, contrary to the previous reports, no significant Changes in physiological efficiency occurred.