September 1993 in “PubMed” The document concludes that antiandrogenic drugs like cyproterone acetate and spironolactone are effective but not permanent treatments for skin-related androgenization in women.
21 citations
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July 2002 in “Clinical and Experimental Dermatology” Hair care products don't cause hair loss if used correctly.
2 citations
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July 2013 in “Fashion business” This study evaluated the protective effects of keratin essence on hair subjected to physicochemical damage. Hair from a woman in her early thirties, who had undergone multiple dyeing and digital permanent treatments, was used. The study divided the hair into four groups: control, damaged, basic essence-treated, and keratin essence-treated. Results showed that keratin essence improved hair protection by reforming and filling gaps between cuticle scales, as observed through scanning electron microscopy. The keratin essence-treated hair exhibited lower brightness and yellowish-blue color but higher reddish-blue color compared to other groups, indicating improved coloring efficiency and structural protection against damage from dyeing treatments.
January 2024 in “Molecules (Basel. Online)” Juglone from walnut extracts may help repair damaged hair.
3 citations
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January 2021 in “Wear” Hair's resistance to wear varies by ethnicity and treatment, with less wear indicating stronger hair.