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3 Results
Type: Article
Section: Testing > Sensory
Johann W. Wiechers, Ph.D.
Words from Wiechers: The Power of Suggestion
In this edition of our Words from Wiechers series, the late author explains the power of belief in product efficacy—and why products should be evaluated based on the perceived value they deliver to consumers.
Jul 20th, 2018
Much Ado About Nothing: Cosmetics Testing with a Placebo
In this column, the author investigates the source of the placebo effect. In addition, he asks the question: Must cosmetics testing always incorporate tests against a placebo?
Feb 23rd, 2009
CT1603-Evans-Hair-Structure-850
Modifying Hair’s Structure From the Inside
Changing hair properties is a regular function of daily-use treatments. But what other methods can be used? Altering the hair’s internal structure may be the next way to achieve these changes.
Mar 4th, 2016
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