November 2025 in “International Journal of Biological Macromolecules”
This study introduced an eco-friendly enzymatic hair dyeing process utilizing laccase-catalyzed polymerization of hematoxylin, achieving intense, long-lasting color comparable to commercial dyes while enhancing hair strength and offering antioxidant and UV-shielding benefits.
December 2025 in “Sustainable Chemistry One World”
In this study, researchers found that mangosteen pericarp extract, combined with FeSO₄ as a mordant, effectively produced a stable reddish hair dye on bleached hair, with good color persistence and enhanced tensile strength, indicating its potential as an eco-friendly and safer alternative to synthetic dyes.
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October 2003 in “Journal of applied polymer science”
This study found that using poly(ethylene imine) as a counterion reagent improved the colorability and shampoo fastness of bleached human hair when dyed with an acid dye.
This study found that extracts from plants like onion peel and walnut possess strong antioxidant properties, making them promising eco-friendly alternatives to synthetic hair dyes, delivering vibrant colors and better wash fastness when combined with oxalic acid.
PP405 is a potential hair loss treatment that may activate dormant hair follicles, but there are concerns about its effectiveness, cost, and side effects. Users discuss treatments like minoxidil, finasteride, and RU58841, expressing skepticism about PP405's long-term success and accessibility.
A person in their 20s is struggling with hair loss, using treatments like minoxidil and finasteride. Suggestions include self-improvement, therapy, hair transplants, and focusing on acceptance and confidence.
Hair systems can be effective but may cause anxiety and maintenance issues, while some prefer medications like finasteride and minoxidil despite potential side effects. Ultimately, personal confidence and character are more important than hair appearance.
Hair loss treatments like finasteride, minoxidil, and dutasteride are discussed, with some users expressing skepticism about finding a permanent cure. Current treatments are considered effective but not a permanent solution, and there's a call for advanced AI to focus on solving male pattern baldness.
Hair transplantation moves DHT-resistant follicles from a donor area (back and sides of the scalp) into thinning or bald areas. The transplanted hair is generally permanent, though surrounding native hair can keep thinning.