Hair fiber characteristics and methods to evaluate hair physical and mechanical properties

  • Maria Valéria Robles Velasco University of São Paulo; School of Pharmaceutical Sciences; Department of Pharmacy
  • Tania Cristina de Sá Dias University of São Paulo; School of Pharmaceutical Sciences; Department of Pharmacy
  • Anderson Zanardi de Freitas Institute of Energetic and Nuclear Researches; Lasers and Application Center
  • Nilson Dias Vieira Júnior Institute of Energetic and Nuclear Researches; Lasers and Application Center
  • Claudinéia Aparecida Sales de Oliveira Pinto University of São Paulo; School of Pharmaceutical Sciences; Department of Pharmacy
  • Telma Mary Kaneko University of São Paulo; School of Pharmaceutical Sciences; Department of Pharmacy
  • André Rolim Baby University of São Paulo; School of Pharmaceutical Sciences; Department of Pharmacy
Keywords: Hair^i1^spropert, Hair^i1^sevaluat, Hair fibers^i1^spropert, Hair fibers^i1^sevaluat, Hair fibers^i1^scharacterist, Optical coherence tomography^i1^sanalytical applicat, Optical microscopy^i1^sanalytical applicat, Electron microscopy^i1^sanalytical applicat

Abstract

The hair thread is a natural fiber formed by keratin, a protein containing high concentration of sulfur coming from the amino acid cystine. The main physical proprieties of the hair depend mostly on its geometry; the physical and mechanical properties of hair involve characteristics to improve: elasticity, smoothness, volume, shine, and softness due to both the significant adherence of the cuticle scales and the movement control (malleability), as well as the easiness of combing, since they reduce the fibers static electricity. The evaluation of these effects on hair may be carried out by several methods, as: optical and electron microscopy, mechanical resistance measuring, shine evaluation and optical coherence tomography (OCT).

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Published
2009-03-01
How to Cite
Velasco, M., Dias, T., Freitas, A., Júnior, N., Pinto, C., Kaneko, T., & Baby, A. (2009). Hair fiber characteristics and methods to evaluate hair physical and mechanical properties . Brazilian Journal of Pharmaceutical Sciences (Impresso), 45(1), 153-162. https://doi.org/10.1590/S1984-82502009000100019
Section
Original Papers