Categories: Efficacy on HairNon classéOther services related to testingPreclinical assays (in-vitro, ex-vivo...)Thematic files

Quantifying Hair Motion by Bossa Nova

In partnership with Trefor Evans from TRI Princeton, BOSSA NOVA Vision is proud to present our lastest work regarding hair motion that has been recently published in the Journal of the Society of Cosmetic Chemists. This follows the results we presented during the last conference on Applied Hair science.

Quantifying Hair Motion

A commercially-available instrument, previously intended to visualize and quantify hair shape and volume, has been modified to measure hair motion. Specifically, a transversal motor now induces a side-to-side oscillating tress stimulus, while a video camera records the outcome. Image analysis software allows for quantifying the amount of motion (i.e. the amplitude), the shape and volume of the hair during motion, and the homogeneity of the hair (i.e. bulk –vs- flyaways).

Each of these parameters has considerable dependence on the frequency of oscillation and so evaluations are carried out by systematically varying this parameter. Preliminary validation experiments are documented which involved methodical variation of parameters that were presumed to be of importance. These included the size and shape of hair tresses, various hair treatments, and environmental conditions.