July 2025 in “Scientific Reports” Fermented grapeseed oil effectively repairs and protects chemically damaged hair.
Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.
April 2023 in “Asia-pacific Journal of Convergent Research Interchange” Hair manicure improves the strength and condition of bleached hair.
October 2024 in “Cosmetics” ATG effectively reduces hair frizz without damaging hair strength.
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June 2019 in “Journal of cosmetic dermatology” Lower pH straighteners change hair more but weaken it.