Natural and hypoallergenic facial hair dye alternatives using iron salts
Keracol Ltd. offers a safer, sustainable alternative for facial hair dye by using non-toxic iron (II) salts and plant extracts. This innovative solution provides hypoallergenic, natural coloration for black to brown shades without harmful allergens.
Overview
Keracol Ltd. presents a groundbreaking solution for facial hair coloration that leverages natural, hypoallergenic ingredients to replace traditional dyes containing harmful allergens. By utilizing non-toxic iron (II) salts coupled with polyphenolic compounds like gallates and plant extracts rich in dihydroxybenzoic acids, this innovative approach offers a safer alternative for achieving desired hair colors ranging from black to various shades of brown. This solution is developed with consumer safety in mind, ensuring minimal health risks while delivering effective and natural-looking results.
Technical specifications
The core technology involves the complexation of iron (II) salts, such as iron (II) lactate, with gallates and certain natural plant extracts. These complexes form dimeric structures that effectively deposit and penetrate the hair shaft. The formulations are tested on yak hair, resulting in excellent color outcomes across a spectrum of black and brown shades. The application pH is controlled to remain within hypoallergenic standards. The solution circumvents the release of harmful acids, traditionally associated with iron-gall inks, by using iron (II) lactate or gluconate, which produce weaker, easily neutralized acids.
Technology readiness level
Currently at TRL 3, this technology has proof-of-concept validation in laboratory settings with successful color results on yak hair. The development plan includes further testing on natural hair, stability assessments, safety evaluations, and consumer trials. The comprehensive project timeline spans 12 to 15 months, aiming to reach higher TRL stages with continued research and validation efforts.
About Keracol Ltd.
Keracol Ltd. is a science-led company specializing in functional, sustainable innovation for the beauty and personal care industry. Operating as a spin-off from the University of Leeds, the company provides end-to-end R&D partnership services that span the entire product lifecycle, from the development of natural, upcycled biomaterials to final product design, testing, and validation. Their technical expertise is rooted in green chemistry, with a focus on areas such as polymers, natural pigments, dyes, and active ingredients. By harnessing nature-based chemistry, Keracol helps both entrepreneurs and established companies create high-performance beauty solutions that prioritize ethical sourcing, full traceability, and verifiable sustainability.
The company's work addresses the growing industry demand for responsible innovation and ingredient transparency. Keracol serves partners in cosmetics, skincare, haircare, and suncare by delivering science-backed formulations that substitute synthetic materials with plant-based, upcycled alternatives. Through their internal R&D capabilities, they facilitate efficient scale-up and ensure that all product claims are supported by robust data and clinical evaluation, effectively bridging the gap between academic research and commercial market-ready products.
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