31 citations,
June 2010 in “Journal of dermatology” Hair bleaching causes significant damage to hair and skin.
30 citations,
September 2018 in “International Journal of Cosmetic Science” Bleaching hair causes severe structural and chemical damage, including protein loss and oxidation.
5 citations,
July 2006 in “Contact dermatitis” Ammonium bisulfite in hair bleach can cause facial eczema.
3 citations,
September 2021 in “Data in brief” Bleaching hair changes its structure and weakens it, which is important for understanding hair damage and creating treatments.
Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.