Development of a stiffness-angle law for simplifying the measurement of human hair stiffness.
In-Keun JungS C ParkY R LeeS A BinYong-Deok HongD EunJ H LeeY S RohB M KimPublished in: International journal of cosmetic science (2018)
The theoretical results using the Stiffness-Angle Law agree with the visual examinations of hair exposed to caffeine and also the known results of hair stiffness from a previous report. Our evaluation method combined with our proposed Stiffness-Angle Law effectively provides an accurate and inexpensive evaluation technique for measuring bending stiffness of human hair.