Human Hair

Human Hair

 

 Surface Energy

 

Hair surface with 40 nm nanoparticles

 Wettability of Keratin Fiber Surfaces, Y. K. Kamath, Cornelia J. Dansizer, Hans-Dietrich Weigmann, Journal of Soc. Cosmetic Chemists, 28, 273-284 (1977).

Wetting Behavior of Human Hair Fibers, Y. K. Kamath, Cornelia J. Dansizer, Hans-Dietrich Weigmann, Journal of Applied Polymer Science, 22, 2295-2306 (1978).

Surface Wettability of Human Hair, Part 1: Effect of Deposition of Polymers and Surfactants, Y. K. Kamath, Hans-Dietrich Weigmann, Cornelia J. Dansizer, Journal of Applied Polymer Science, 29, 1011-1026 (1984).

Marangoni Effect in the Water Wetting of Surfactant Coated Hair Fibers, Y. K. Kamath, Cornelia J. Dansizer, Hans-Dietrich Weigmann, Journal of Colloid and Interface Science102, 164-172 (1984).

Surface Wettability of Human Hair, Part II- Effect of Temperature on the Deposition of Polymer and Surfactants, Y. K. Kamath, Cornelia J. Dansizer, Hans-Dietrich Weigmann, Journal of Applied Polymer Science, 30, 925-936 (1985).

Surface Wettability of Human Hair, Part III: Role of Surfactants in the Surface Deposition of Cationic Polymers, Y. K. Kamath, Cornelia J. Dansizer, Hans-Dietrich Weigmann, Journal of Applied Polymer Science, 30, 937-953 (1985).

Modification of Human Hair Through Fiber Surface Treatments: Characterization by Wettability, Y. K. Kamath, Hans-Dietrich Weigmann, Cosmetics and Toiletries, 101, 37-49 (1986).

Characterization of Surface Deposits on Human Hair Fibers, H. D. Weigmann, Y. K. Kamath, S. B. Ruetsch, P. Busch, H. Tesmann, Proceedings of the 8th International Wool Textile Research Conference, February 7-14,1990, Christchurch, New ZealandIV, 522-532 (1990).

Fractography

 

Smooth radial fracture

Fractography of Human Hair, Y.K. Kamath, Hans-Dietrich Weigmann, J. Appl. Polym. Sci., 27, 3809-3833, (1982).

Mechanical and Fractographic Behavior of Negroid Hair, Y. K. Kamath, Sidney B. Hornby, Hans-Dietrich Weigmann,  J. Soc. Cosmet. Chem.35, 2143, (1984).

Effect of Chemical and Humectant Treatments on the Mechanical and Fractographic Behavior of Negroid Hair, Y. K. Kamath, Sidney B. Hornby, Hans-Dietrich Weigmann,  J. Soc. Cosmet. Chem.36, 39-52, (1985).

Photodegradation

 

UV damaged hair after washing

Photodegradation of Human Hair: An SEM Study, S. B. Ruetsch, Y. K. Kamath, and H. –D. Weigmann, J. Cosmet. Sci., 51, 103-125, (2000).

Photodegradation of Human Hair,  S. Ratnapandian, S. B. Warner, and Y. K. Kamath, J. Soc. Cosmet. Chem., 49, 309-320, (1998).

Chemical and Photo-oxidative Hair Damage Studied by Dye Diffusion and Electrophoresis. S.B. Ruetsch, B. Yang, and Y. K. Kamath.  J. Cosmet. Sci., 54, 379-394, (2003).

Photodegradation of Hair of Different Ethnicity After 1 Year Exposure to Natural Weathering in Arizona,  Y. K. Kamath, and S. B. Ruetsch,  IFSCC Magazine, 9, No. 4 (2006).

Role of Melanin and Artificial Hair Color in Preventing Photo-Oxidative Damage to Hair S. B. Ruetsch,  B. Yang, and Y.K. Kamath,  IFSCC Magazine,  7, 127-135 (2004).

Change in Surface Chemistry of the Cuticle of Human Hair Caused by Chemical and Photochemical Oxidation, S. B. Ruetsch, and Y. K Kamath,  IFSCC Magazine,  7, 299-307 (2004).

Combing Effects

 

Step fracture

Measurements of Combing Forces, Y. K. Kamath, Hans-Dietrich Weigmann,  J. Soc. Cosmet. Chem., 37, 111-124, (1986).

Hair Breakage During Combing III, The Effects of Bleaching and Conditioning on Short and Long Segment Breakage by Wet and Dry Combing of Tresses, C. Robbins, and Y. K. Kamath,  J. Cosmet.Sci., 58, 477-484, (2007).

Combing Damage to Hair Cuticle Structure, K. Ram Ramaprasad, Sigrid B. Ruetsch, Han-Deiter Weigmann and Y. K. Kamath, IFSCC Magazine10, 127-134 (2007).

Penetration of Small Molecules

 

Coconut oil treated hair

Secondary Ion Mass Spectrometric Investigation of Penetration of Coconut and Mineral Oils into Human Hair Fibers:  Relevance to Hair Damage, S. B. Ruetsch, Y. K. Kamath, Aarti S. Rele, and R. B. Mohile,  J. Cosmet. Sci., 52, 169-184, (2001).

Mapping  Penetration of Cosmetic Compounds into Hair Fibers Using Time of Flight Secondary  Ion Mass Spectroscopy (TOF-SIMS), S. B. Hornby,  Y. Appa, S. Ruetsch, and Y. K. Kamath,  IFSCC Magazine,  8, 99-104 (2005).

Penetration of Cationic Conditioning Compounds into Hair Fibers, S. B. Ruetsch, and Y. K. Kamath, J. Cosmet. Sci., 56, 323-330 (2005).

Miscellaneous Studies 

 

Damaged – split hair

Diffusion of Semipermanent Dyestuffs in Human Hair, S. K. Han, Y. K. Kamath, Hans-Dietrich Weigmann,  J. Soc. Cosmet. Chem., 36, 1-16, (1985).

Measurement of Interfiber Adhesion, Y. K. Kamath, and H. D. Weigmann, J. Cosmet. Sci., 51, 351-366, (2000).

Torsional Method for Evaluating Hair Damage and Performance of Hair Care Ingredients, D. Persaud, and Y. K. Kamath, J. Cosmet. Sci., 55, S65-S77, (2004).

Tensile Properties of Twisted Hair Fibers, T. A. Dankovich, Y. K. Kamath, and S.B. Ruetsch, J. Cosmet. Sci., 55, S79-S90, (2004).

Almond oil treated hair

Effect of Oil Films on Moisture Vapor Absorption on Human Hair, Karin Keis, Craig L. Huemmer and Y. K. Kamath, J. Cosmet. Sci., 58, 135-145 (2007).

The Effect of Treatments on the Shear Modulus of Human Hair Measured by the Single Fiber Torsion Pendulum, D. L. Harper, and Y. K. Kamath,  J. Cosmet. Sci., 58, 329-337, (2007).

Preliminary Analysis of the distribution of water in human hair by small angle neutron scattering, Yash Kamath, N.Sanjeeva Murthy, Ram Ramaprasad, J.Cosmet. Sci., 65, 37-48, (2014).

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