May 2026 in “Brazilian Journal of Hair Health” This study found that bleaching significantly damages hair structure and increases combing difficulty, while dyeing with emulsifiers can partially reduce damage and improve combability, yet both processes cause notable protein loss.
This study developed a natural hair dye using Coreopsis tinctoria Nutt. extract, finding that it produced yellow to dark brown colors depending on the treatment, with ferrous lactate enhancing dye performance and color stability after washing.
15 citations
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June 2011 in “Journal of Ginseng Research” In this study, Korean red ginseng was observed to improve skin hydration and reduce both the severity of atopic dermatitis and serum IgE levels after 16 weeks in patients with the condition.
1 citations
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January 2014 in “Journal of clinical & experimental dermatology research” This study suggests that the fresh leaf extracts of Naringi crenulata may promote hair growth in Wistar rats, potentially due to the presence of terpenoids and flavonoids.
3 citations
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November 2022 in “Experimental dermatology” This article discusses melatonin's role in mammalian coat color and its potential in melanoma treatment when used with chemotherapy, but reports no new clinical results.