Physical and Mechanical Properties of the Hair Shaft: A Review of Measurement Techniques to Verify the Efficacy of Cosmetic Products

January 2024 in “ Seven Editora eBooks ”

João S. Soares, Melânia Lopes Cornélio

hair shaft keratin mechanical strength shine combability optical microscopy electron microscopy dynamometers mechanical resistance compression tests specular reflection gloss evaluation

TLDR Different techniques measure hair properties to ensure cosmetic products work.

This review discusses various techniques for measuring the physical and mechanical properties of hair, which are crucial for verifying the efficacy of cosmetic products. Hair, composed mainly of keratin, has unique characteristics like mechanical strength, shine, and combability. The methods covered include optical and electron microscopy, dynamometers for mechanical resistance, compression tests for combability, and specular reflection for gloss evaluation. These measurement techniques are essential in the development of new cosmetic products.

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