Why was this study done?
Measuring the ability of a substance to clean hair is an important step in optimizing hair care formulas during formulation. This study was designed to test differing evaluations of shampoo detergency.
What did the study find?
The study describes a process whereby shampoos can be rated for efficacy in cleaning hair.
Evaluation of Relative Shampoo Detergency.
Authors: Thompson D, Lemaster C, Allen R, Whittam J. J Soc Cosmet Chem, 1985. 36(4): p. 271-86.
PDF Manuscript: J Soc Cosmet Chem, 1985.