January 2021 in “Lecture notes in mechanical engineering” High temperatures, acidic conditions, and too much coconut oil damage hair, while a pH of 5 to 7 keeps it healthy.
51 citations
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January 2014 in “International journal of trichology” Shampoo pH can affect hair health, with alkaline shampoos potentially causing damage and acidic shampoos reducing frizz.
10 citations
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September 2020 in “Biopolymers” Hair's structure and properties change with pH; acidic pH maintains strength and less swelling, while alkaline pH increases water content and swelling.
4 citations
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November 2017 in “Journal of Cosmetic Dermatology” Certain polymers can stick to hair and increase volume, working best at a pH of 7 to 9.
November 2024 in “International Journal of Cosmetic Science” Haircare products with a pH between 5 and 7 are best for maintaining healthy hair.