Mechanical Properties of Hair 248 15. M Feughelman, The physical properties of alpha keratin fibers, J Soc Cosmet Chem, 33, 385-406 (1982). 16. M Feughelman, A model for the mechanical properties of the a-keratin cortex, Textile Res J, 64, 236-9 (1994). 17. EG Bendit, There is no Hookean region in the stress-strain curve of keratin or other viscoelastic fibers, J Macromol Sci-Physics, B17(1), 129 (1980). 18. M Feughelman, MS Robinson, Some mechanical properties of wool fibers in the “Hookean” region from zero to 100% relative humidity, Textile Res J, 41, 469 (1971). 19. YK Kamath, SB Hornby, HD Weigmann. Mechanical and fractographic behavior of negroid hair, J Soc Cosmet Chem, 35, 21 (1985). 20. MM Breuer, The interaction between surfactants and keratinous tissue, J Soc Cosmet Chem, 30, 41 (1979). 21. DW Cannell, LE Carothers, Permanent waving:utilization of the post-yield slope as a formulation parameter, J Soc Cosmet Chem, 29, 685 (1978). 22. M Feughelman, The mechanical properties of permanently set and cystine reduced wool fibers at various relative humidities and the structure of wool, Textile Res J, 33, 1013 (1963). 23. JG Gumprecht, K Patel, RP Bono, Effectiveness of reduction and oxidation in acid and alkaline permanent waving, J Soc Cosmet Chem, 28, 717-32 (1979). 24. LJ Wolfram, MKO Lindemann, Some observations on the hair cuticle, J Soc Cosmet Chem, 22, 839-50 (1971). 25. R Beyak, CF Meyer, GS Kass, Elasticity and tensile properties of human hair, I: Single fiber test method, J Soc Cosmet Chem, 20, 615 (1969). 26. CR Robbins, Morphological and macromolecular structure, Chemical and Physical Behavior of Human Hair, 4th Edn, New York: Springer-Verlag: pp 1-62 (2002). 27. CR Robbins, The physical properites and cosmetic behavior of hair, Chemical and Physical Behavior of Human Hair, 4th Edn, New York: Springer-Verlag: pp 386-473 (2002). 28. RR Wickett, Measuring the mechanical strength of hair, In: Handbook of Non-Invasive Methods and the Skin, J Serup and BE Jemec, eds., Boca Raton: CRC Press: pp 535-41 (1995). 29. CL Gummer, Automated tensile testing of hair, 10th International Hair Science Symposium, Rostock (1996). 30. R Beyak, GS Kass, CF Meyer, Elasticity and tensile properties of human hair, II: Light radiation effects, J Soc Cosmet Chem, 22, 667 (1971). 31. P Christian, N Winsey, M Whatmough, PA Cornwell, The effects of water on heat-styling damage, J Cosmet Sci, 62, 15-27 (2011). 32. L Hu, Heat Damage to Hair, University of Cincinnati, College of Pharmacy (1996). 33. J Jachowicz, Hair damage and attempts to its repair, J Soc Cosmet Chem, 38, 263 (1987). 34. ML Tate, YK Kamath, SB Ruetsch, HD Weigmann, Quantification and prevention of hair damage, J Soc Cosmet Chem, 44, 347-72 (1993). 35. RR Wickett, J Jachowicz, Measuring Hair, in: Handbook of Cosmetic Science and Technology, 3rd ed., A Barel, M Paye, HI Maibach, eds., New York: Informa Health Care, pp 694-735 (2009). 36. LJ Wolfram, K Hall, I Hui, The mechanism of hair bleaching, J Soc Cosmet Chem 21, 875 (1970). 37. TW Mitchell, M Feughelman, Phase transition in wet a-keratin fibers above 100C. Kolloid Zeithschrift und Zeitschrift fur Polymers, 229, 124-31 (1969). 38. TW Mitchell, M Feughelman, The mechanical properties of wool fibers at temperatures above 100C, Textile Res J, 37, 660-6 (1967).