TRI Talks 2022
October 12 + October 26 + November 9 + November 30
Available Live and On Playback
October 12th, October 26th, November 30th, and December 7th
A series of four TRI Talks focused on hair science. Free to join.
All Times Eastern Standard Time
TRI Talk #1
1:00p to 2:00p — Wednesday, October 12th
Do Bond Builders Really Repair the Hair?
Dr Paul Cornwell — TRI Princeton
Bond builders seem to be the talk of the town in the hair care category. However, one could argue that that these claims are probably just a new way of communicating effects that we have known about for many, many years. This presentation reviews some of the key bond building technologies currently on the market and suggests their likely mechanisms of action.
TRI Talk #2
1:00p to 2:00p — Wednesday, October 26th
The Nebulous World of Hair Damage
Dr Trefor Evans — TRI Princeton
The expression “hair damage” is used ubiquitously, and rather haphazardly, throughout our industry. It is, of course, first and foremost a consumer expression, used to denote that their hair has developed undesirable properties. As scientists, we understand that the complex structure of hair fibers can indeed degrade as a result of everyday habits and practices; but the nature of this breakdown is myriad and occurs to differing degrees depending on the insults involved. Therefore, generic use of this expression is hugely nebulous and sidesteps any specificity about underlying causation.
In the lab, we can perform all manner of evaluations to probe specific alterations to the hair structure and chemistry, which collectively provide for an assessment of the hair’s condition and the issues involved. But, by itself, any method will usually provide information about one specific property which may, or may not, proport to the issue at hand.
This presentation will discuss some of the various techniques and approaches that are used to describe “hair damage” with specific emphasis on the regions of the hair structure being probed; the possible causes of such effects; and, where applicable, how these effects may be masked or reversed.
TRI Talk #3
1:00p to 2:00p — Wednesday, November 9th December 7th
Innovative Method to Evaluate Hair Porosity by Investigating the Diffusion of Actives
Dr Samuel Gourion Arsiquaud — TRI Princeton
Hair porosity is a key parameter to understand variations between human hair fibers related to age, ethnic group, hair treatment or diseases. In a hierarchical structure like in hair fiber, porosity may occur at any size level from nanoscale to macroscale. The porosity may also occur inside the three main structures, the medulla, the cortex and the cuticle. To evaluate and compare the hair porosity inside the cortex, at TRI, we have developed an innovative method based on the use of the FTIR imaging spectroscopy to investigate and visualize the active diffusion by capillary along single hair fiber. This method as well as the results will be presented and discussed during this TRI Talk.
TRI Talk #4
1:00p to 2:00p — Wednesday, November 30th
What Kind of Lipids Do We Seek for Hair?
Dr Ernesta Malinauskyte — TRI Princeton
Although lipids are minor hair components, their loss drastically impacts multiple hair properties. With adequate sebum production, we may hope to replenish hair lipids naturally, at least for some hair types. But aging and scalp disorders often interfere with it, therefore, we have to seek external supplementation.
The talk will investigate the similarities and differences in the lipid composition of sebum and hair. It will also attempt to classify the popular oils based on dominating lipid classes and relate the specific classes with the existing evidence. Where do we go from there?