Hair photoprotection by dyes.
We have found that hair dyes protect hair against photodamage. The efficacy of photoprotection of dye products has been measured by monitoring the tensile strength of hair fibers and the integrity of the disulfide bonds in the fibers. Although the hair dyed with permanent dye products are initially weakened due to oxidative chemical damage, they also show a slower rate of degradation upon photoirradiation, compared to the undyed hair. Thus, a less appreciated benefit of using hair colors is their ability to provide protection against sun damage.
Pande
C M
CM
Clairol Inc., 2 Blachley Road, Stamford, CT 06922, USA.
Albrecht
L
L
Yang
B
B
D006197:Hair / Q000528:radiation effects*; D006202:Hair Dyes; D011837:Radiation-Protective Agents; D013057:Spectrum Analysis
D006202:Hair Dyes; D011837:Radiation-Protective Agents