2 citations
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December 1988 in “PubMed” C.I. Acid Orange 3 caused cancer in female rats but not in male rats or mice.
17 citations
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August 1979 in “Journal of The American Academy of Dermatology” A new staining method helps tell growing from resting hairs to diagnose hair loss.
66 citations
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February 1985 in “Archives of dermatological research” Hair dyes penetrate the scalp very minimally, less than 1%.
October 2012 in “Sax's Dangerous Properties of Industrial Materials”
9 citations
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November 2000 in “Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE” Dyeing hair can help target and destroy hair follicles selectively.
1 citations
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December 2021 in “Annals of phytomedicine” The herbal hair dye with a 1:2 henna to indigo ratio works well, is safe, and eco-friendly.
January 1963 in “Stain technology” Ziehl-Neelsen's stain helps identify different parts of hair in sheep and goats.
29 citations
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April 2011 in “Journal of Microscopy” The modified osmium method improves hair cortex staining for better visualization.
2 citations
,
November 2025 in “Pharmaceutics” Moderately lipophilic dyes penetrate skin deeply, while highly hydrophobic or lipophilic dyes stay on the surface.
January 2025 in “Analytical Methods” A new fluorescent material can detect dextran sulfate sodium, turning green when present, useful for forensic and environmental monitoring.
1 citations
,
January 2021 in “Springer Proceedings in Materials” Researchers developed a new method to clearly see and label hair proteins with minimal errors using advanced freezing and microscopy techniques.
5 citations
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February 2019 in “Journal of oceanology and limnology (Online)” Ecklonia cava extract can reduce the damage and stress caused by hair dye.
January 1991 in “Acta Dermato Venereologica” A new method effectively visualizes keratin in hair without harsh chemicals.
27 citations
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February 2003 in “Cell and Tissue Research” FM dyes effectively stain Merkel cells for long-term observation.
December 2023 in “Materials Today Sustainability” Scientists made glow-in-the-dark dots from human hair that can detect iron, prevent counterfeiting, and reveal fingerprints.
1 citations
,
January 2023 in “Indian Journal of Animal Research” A new method effectively stains hair samples for study without losing hair sections.
1 citations
,
March 2017 in “Archives of Plastic Surgery” A new method using gentian violet dye makes it easier to see and work with white hair in hair transplant surgeries.
3 citations
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January 2013 in “Journal of cosmetics, dermatological sciences and applications” HAIRCARECUBE TM (HCC) helps hair products work better by getting active ingredients deeper into the hair.
10 citations
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March 2016 in “Toxicology and applied pharmacology” Using A132 hair dye with sunlight can cause skin damage and hair loss.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The herbal hair dye is a safe, effective, and natural alternative to chemical dyes.
54 citations
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October 2002 in “Journal of controlled release” Medium lipophilic substances penetrate skin best, and adding ethanol can increase delivery to hair follicles.
25 citations
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January 2013 in “Colloids and surfaces. B, Biointerfaces” Hair dye colors mainly target melanin granules in black hair.
June 2025 in “OPAL (Open@LaTrobe) (La Trobe University)” A new hair dye method uses polyphenols and oxidation to create a long-lasting brown color on gray hair.
12 citations
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December 2017 in “Food and chemical toxicology” Permanent hair dye mixtures can irritate and damage the skin.
63 citations
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February 2017 in “ACS biomaterials science & engineering” Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.
October 2025 in “Coloration Technology” Delipidised wool is brighter, dyes better, and is more eco-friendly.
January 2000 in “Time to knit” SFE is a better extraction method, and the HPTLC method is effective for analyzing wedelolactone in E. alba.
October 2023 in “Biomimetics” The new hair-dyeing shampoo is safe, colors hair evenly, and strengthens it.
June 2025 in “Indian Journal of Heterocyclic Chemistry” A new method accurately measures minoxidil and finasteride in medicines.
1 citations
,
December 2022 in “Middle East Journal of Science” Permanent hair dyes use chemicals that react with hydrogen peroxide to create color.