May 2026 in “International Journal of Cosmetic Science” Ozonated water damages hair structure and proteins.
January 2026 in “International Journal of Biological Macromolecules” Small KP peptide improves hair without reducing agents, while larger proteins need them for better results.
June 2017 in “University of the Arts London Research Online (University of the Arts London)” Polymers help reduce damage and improve bleached hair when used during or after bleaching.
Oxidized hair can naturally regain strength and stability over six months.
Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.