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2 Results
Type: Article
Section: Testing > Microbiology
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Industry Insight: Testing the Most Efficient Color Shampoo/Conditioner Duos
In this "Industry Insight," Sabina Wizemann, senior chemist of the Health, Beauty and Environmental Sciences Lab at the Good Housekeeping Institute has evaluated shampoo and conditioner pairs to identify the best performers for hair dye retention. In a recent interview, she explained how she tests these products, analyzes their efficacy and claims, and which duos exemplified the highest efficacy, compared with other products.
Jun 1st, 2021
In the case of fluctuating PET results for w/o products, it can be useful to increase the number of samples to verify the results.
Determining Preservative Efficacy in W/O Formulas, Part II: Making Microbiological Safety Assessments
The relevance of microbiological tests for w/o formulas has been questioned, mandating a more holistic approach. This second article in a series examines the failure rate of PETs for w/o products but looks at why this does not mean insufficient stability.
Oct 5th, 2022
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