The Effects of Humidity on Hairstyles: Analysis of the mechanical properties of styling polymers

Clarissa Brechtken, Diane Metten, Rolf Bayersdoerfer, Celina Jones, Gabriele Wortmann, Franz J Wortmann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The aim of this study is to extend the knowledge gained through the dynamic humidity curl retention (DHCR) to determine the influence of the polymers in the composite (polymer/hair) in order to differentiate the polymers and characterise their properties. The DHCR, as a further development of the High Humidity Curl Retention, is a method to determine the time-dependent ability of treated hair strands to retain a certain hairstyle under rapid humidity change [1]. The performance of the polymers in the DHCR indicated a drastic change of the mechanical properties of the polymer through the humidity variation. Therefore, the softening behaviour by moisture is investigated with regard to its effects on the mechanical properties using the torsion-pendulum method where the storage and loss moduli are determined [2]. For a more profound understanding of the pure polymer characteristics the interaction with an inert carrier is investigated. Based on the determined moduli, it is possible to define the humidity-dependent glass transition [3]. By considering both methods, we want to generate new insights into the moisture-dependent properties of the polymers in order to achieve a better explanation of their behaviour.

Keywords: curl retention, glass transition, humidity dependence, mechanical properties


SCHLINGMANN, M., 2016. Identification of a New Generation of Polymers for Hair Styling Mousses., Manchester, UK: The University of Manchester.
ISO 6721-2, 2., 2008. Plastics – Determination of Dynamic Mechanical Properties. Part 2: Torsional-pendulum method (English Version).
SHAW, M. & MACKNIGHT,W. J., 2005. Introduction to Polymer Viscoelasticity.. Hoboken, USA: John Wiley & Sons, Inc.
Original languageEnglish
Title of host publicationProc 22nd International Hair-Science Symposium
PublisherDWI - Leibniz-Institute for Interactive Materials
Publication statusPublished - 10 Sept 2021


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