'Testing Tactics in Hair' Column Series — An Index of Works by Trefor Evans, Ph.D.
From 2013-202, adviser and columnist Trefor Evans, Ph.D., wrote the column series, "Testing Tactics in Hair" for Cosmetics & Toiletries, covering methods to measure damage, treatments, claims and more. This is an index of his works.
Trefor Evans Evaluating Hair Conditioning Measuring Hair Strength Water Content Hair Styling Hair Styling Products
Source: cosmeticsandtoiletries.com