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Measurement and prevention of hair photoaging
Author(s) -
RoddickLanzilotta A.,
Kelly R.
Publication year - 2005
Publication title -
international journal of cosmetic science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 62
eISSN - 1468-2494
pISSN - 0142-5463
DOI - 10.1111/j.1467-2494.2005.00257_10.x
Subject(s) - photoaging , fiber , ultimate tensile strength , ultraviolet radiation , materials science , chemistry , medicine , composite material , dermatology , radiochemistry
Fluorescence spectroscopic measurement of the amino acid tryptophan on the hair fiber surface was extended to include in situ fiber irradiation and a novel cyclical wash off, reapplication protocol. When applied to the investigation of a new damage prevention active, it was shown that the active was preferentially degraded in a sacrificial manner and that the underlying fiber surface was maintained in good condition. In addition, tensile strength measurements were performed to assess the mechanical properties of the treated and untreated fibers following UV and sunlight exposure and the results demonstrate the damage prevention effectiveness of the active.