Hair lipid and surfactants. Extraction of lipid by surfactants and lack of effect of shampooing on rate of re‐fatting of hair

@article{Shaw1979HairLA,
  title={Hair lipid and surfactants. Extraction of lipid by surfactants and lack of effect of shampooing on rate of re‐fatting of hair},
  author={D. A. Shaw},
  journal={International Journal of Cosmetic Science},
  year={1979},
  volume={1}
}
  • D. Shaw
  • Published 1979
  • Chemistry, Medicine
  • International Journal of Cosmetic Science
The efficiences of extraction of hair lipid by aqueous solutions of surfactants, using a one‐stage washing procedure, are highly variable, roughly averaging 50% of the lipid readily extractable with diethyl ether at room temperature. Anionic surfactants are significantly more efficient than the non‐ionic surfactant, Tween 20R. Repeated washing of hair continually removes lipid. It is suggested that a one‐stage washing procedure removes essentially all the hair‐surface lipids and that… Expand
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  • Chemistry, Medicine
  • International journal of cosmetic science
  • 1979
A sensitive method is described for the spectrophotometric assay of hair lipid extracted from hair samples less than 10 mg in weight, i.e. for amounts of lipid down to about 5 μg. The solvent‐freeExpand
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The secretion rate of both male and female rats was found to be increased and the increase was related to the frequency of removal of surface lipid, and the mechanism was therefore a local one. Expand
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There was no significant correlation with body weight either of the plateau level in unwashed rats or of the rate of build‐up of lipid in washed rats, which provides no justification for correcting levels of hair lipid for body weight. Expand
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Modification of the method with careful attention to detail has increased the reproducibility of the results and there is good agreement of the Results on both sides of the forehead and in collections made over a 7‐week period. Expand
Entfettung und Nachfetten der Kopfhaut und der Haare nach Kopfwäsche mit verschiedenen Tensiden
Bei 32 Versuchspersonen wurden Entfettung und Nachfetten der Haare und der Kopfhaut nach Kopfwasche mit dem anionenaktiven Tensid Polyathylenglykollaurylathersulfatnatriumsalz und dem nichtionogenenExpand
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