Free Webinar

Hair Evaluation Methods
Paul Cornwell and Eleanor Lehman, TRI Princeton (USA)
​​​​​​​Wednesday 22 February 2023

West Coast USA 8h = Mexico City / Chicago 10h = Bogota / East Coast USA 11h = Sao Paolo 13h = UK 16h = Central Europe 17h = J'burg / Tel Aviv 18h = New Delhi 21h30 = Sing / HK / China / Taipei 0h = Japan / Korea 1h Thursday = Melbourne 3h Thursday = Wellington 5h

About the Webinar

“If you can not measure it, you can not improve it” is a quote attributed to the famous British physicist Lord Kelvin (1824-1907).  This quote remains relevant today when dealing with claims substantiation techniques for hair care.  In order to make new or stronger claims, you always need better measurement techniques. 

This presentation will describe the four main types of claim substantiation tests used in hair: (1) sensory tests, (2) tress tests, (3) single fibre tests and (4) tests for investigating the chemical composition of the hair.  It will then review several exciting new developments in this area made at TRI, including new assays for hair porosity, hair breakage and hair lipid composition, and new test methods developed for use on very curly, textured hair.​​​​​​​

About the Co-Presenters

Eleanor Lehman, TRI Princeton Director of Hair Contract Testing and Treasurer
Eleanor first worked for TRI as a summer intern in 1997, evaluating the flow of ink through magic markers to increase their effectiveness. After completing her degree in Chemical Engineering from Columbia University, Eleanor worked for Intel Corporation as a Materials Scientist before returning to TRI in 1999. Over her career with TRI, she has contributed to a number of programs, including Member Services, Professional Education, Marketing and Promotion, and Occupational Health and Safety. In her current role, she serves as Secretary/Treasurer of the TRI Board of Trustees and is responsible for Finance, Accounting and Human Resources.

Paul Cornwell, TRI Princeton Business Development Director

Dr Paul Cornwell furthers TRI's important research work through bringing-in research funding and partnerships.  Paul also sets-up and organises scientific courses and events for the institute.  

Paul has 25 years’ experience working in the cosmetics industry working in various leadership roles in Unilever R&D and PZ Cussons.  He has many publications and patents in skin delivery systems and hair fibre science.

​​​​​​​Dr Cornwell is a member of the Scientific Programme Committee at the UK Society of Cosmetic Scientists (SCS). He is a visiting lecturer on cosmetic science at Liverpool John Moores University and at Sunderland University.  Paul also contributes to the Evaluation and Statistics modules on the UK SCS Cosmetics Science Diploma course.

About Perry Romanowski, Webinar Moderator

Perry Romanowski joined the IFSCC Praesidium as Chair of Education in 2019. He brought with him years of experience sharing his knowledge of cosmetic chemistry via webinars and podcasts as President of, an on-line education website. Previously President of the Society of Cosmetic Chemists (USA & Canada) he held numerous other offices at the national and regional level. When he's not busy working or volunteering Perry pursues his joggling streak of more than 5,000 days. He also occassionally plays ukelele (but not while running).

  • Mary Lynn Halland, IFSCC Secretary General

    Webinar Host

  • Paul Cornwell, TRI Princeton


  • Eleanor Lehman, TRI Princeton


  • Perry Romanowski, IFSCC Education Chair

    Webinar Moderator

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