September 2018 in “University of the Arts London Research Online (University of the Arts London)” L-arginine, hydrolysed keratin, and cystine-silanol copolymer can help protect hair from damage during and after bleaching.
May 2026 in “Brazilian Journal of Hair Health” Bleaching damages hair the most, while dyes improve combability but still cause protein loss.
30 citations
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September 2018 in “International Journal of Cosmetic Science” Bleaching hair causes severe structural and chemical damage, including protein loss and oxidation.
4 citations
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August 2016 in “PubMed” Repeated dyeing and shampooing cause hair color loss and damage.
7 citations
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January 1995 Silicone pretreatment protects hair from damage and reduces color fading without interfering with bleaching or dyeing.