The Latest at TRI

We are pleased to announce that the registration pages for the 9th International Conference on Applied Hair Science are now open. Please go to for more information.

Registration to this on-line event will cost $100. This will give you access to all the live on-line sessions and to play-back too. A 10% early-bird discount will apply until March 31st. Large discounts are also available for groups and for students, please contact us before registering. For further details e-mail us at .

Don’t worry if you already registered for the 2020 conference, before it was cancelled because of the COVID pandemic. We will be contacting you soon to help you register for the 2021 conference, and to sort-out any refunds.

New Jersey has had a deep blanketing of snow over the last week. The TRI team have been both loving and hating it!

Photos show the TRI President, David Graham enjoying using his snow blower to clear his drive, and Samuel Gourion-Arsiquaud, our director of Bio-Substrates, getting covered in snow whilst shoveling his driveway. The laboratory had to close for just one day this winter due to snow. Unfortunately, home working now means that there was no time-off for the team!

This month sees the publication of a new review of permanent waving and perm chemistry from Dr Trefor Evans (Institute Fellow, Director of Research) in the Journal of Cosmetic Science (

As Dame Edna will agree, although traditional perm chemistry (like her!) has been around for over 70 years, it still arguably remains our best means of permanently altering the shape of hair. The hullabaloo created by the so-called Brazilian keratin treatments has led to resurgence in research activities in this area—and so an overview of the incumbent technology would seem pertinent. This review highlights underlying chemistry responsible for the success of traditional thioglycolate solutions but makes the case that our knowledge gap lies with the kinetics of the process ( Dr Evans argues that investigating the kinetics of the perm process will provide a way of understanding the inter-subject variability in the effectiveness of perm treatments, and open the way to giving more reproducible results for consumers (and Dame Edna).

As in many areas of well-established science, scratch just below the surface and you find out that there still is lots we don’t know, and many opportunities to learn and to improve. Dr Evans hopes that his review will spark further interest in perm chemistry and kinetics.

For more information about TRI hair research visit

TRI Princeton

601 Prospect Avenue
Princeton, NJ 08540


TRI is a 501(c)3 Corporation

@2021 by TRI Princeton

Quick Links
Contact Us