Study of Perm-damage to Hair and Protection by Conditioner
January 2001
in “
China Surfactant Detergent & Cosmetics
”
TLDR Both conditioners help protect hair from perm damage, but their effectiveness varies.
The study investigated the effects of perm damage on hair using ammonium thioglycolate applied 1, 2, or 3 times, assessing damage through surface morphological changes and mechanical properties. A model for perm-damaged hair was established, and the protective effects of two conditioners, Protective factor C and Keratin, were compared. The study concluded that both conditioners provided some level of protection against perm-induced damage, with differences in effectiveness observed between the two.
