3 citations
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June 2019 in “Journal of cosmetic dermatology” In this study, tresses treated with pH 1.0 acid straightener showed better straightening but more damage to hair properties compared to those treated with pH 2.0.
April 2019 in “Digital Library of Theses and Dissertations (Universidade de São Paulo)” This study found that the acidic hair straightening formulation at pH 1.0 improved hair alignments and straightening effectiveness more than pH 2.0, but it weakened fiber strength and affected hair color and composition.
15 citations
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October 1970 in “Archives of disease in childhood” Hair amino acid levels can indicate metabolic disorders.
August 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This study developed and evaluated a coconut oil-based polyherbal hair oil using various medicinal plants, finding it exhibited satisfactory physicochemical properties and stability, making it a promising hair care formulation, though further biological evaluation is needed to confirm therapeutic benefits.
August 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The researchers reported that a coconut oil-based polyherbal hair oil developed using traditional medicinal plants demonstrated satisfactory physicochemical properties, including stability and pH suitability for scalp application, though further biological evaluation is needed to confirm therapeutic effects.