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The Latest at TRI

Digging for Data: Mining Data from Historical Repeated Grooming, Wet Combing & Dry Combing Studies

  • Writer: TRI Princeton
    TRI Princeton
  • 3 hours ago
  • 2 min read

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NEW TRI NOTES ON RESEARCH 565 PUBLISHED


How many of us sit on piles of historical data, and never look at it again?  At TRI we decided to try and mine our old data, and to use it to create useful information for us and our member companies.  A Notes on Research covering this work has just been uploaded to the TRI library and is available exclusively to TRI Library Member Companies.  It is titled ‘Evaluation of Correlations between Wet Comb, Dry Comb, and Repeated Grooming Measurements on European Medium Brown Tresses’.  Notes on Research 565, https://library.triprinceton.org/25s6mj6/


Graph showing the correlation between wet combing (WC) and dry combing (DC) results across different treatments

Graph showing the correlation between wet combing (WC) and dry combing (DC) results across different treatments


In this work, Remi Leano, a summer intern student at TRI, harvested and analysed historical data from the TRI database from repeated grooming, dry combing, and wet combing tests on European medium brown tresses between 2022 and 2023. 


Analysis of pooled data from repeated grooming studies, for example, showed that, on average, versus a non-conditioning shampoo, shampoos reduced breakage 13%, conditioners 41%, shampoo and conditioner combinations by 45%, rinse-off masks by 63%, and leave-in oils by 69%.  


Analysis of pooled data from dry combing showed that, on average, versus a non-conditioning shampoo, shampoos reduced dry combing forces 27%, conditioners 78%, shampoo and conditioner combinations by 66%, rinse-off masks by 69%, and leave-in oils by 85%.


Analysis of pooled data from wet combing showed that, on average, versus a non-conditioning shampoo, shampoos reduced wet combing forces 41%, conditioners 88%, shampoo and conditioner combinations by 89%, and rinse-off masks by 87.


The results presented are valuable as they will be used within TRI to benchmark results and claims arising from other studies. In particular, these data will be used to predict quantitative claims for clients, ensuring that the advice and guidance that we give to clients is sound. 


Finally, in addition to providing benchmark data, this study also enabled us to start correlating the data collected through different techniques on the same formulations. This analysis revealed that repeated grooming, wet combing and dry combing were, as expected, closely connected and predictive of each other.


To read the original article, head to the TRI Library, or, if you’re interested in becoming a Member Company and having free access to all library content (books, slides and videos), please get in contact


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