Nanoparticulate polymer encapsulation for enhanced pastel hair dye stability
This innovative technology encapsulates pastel hair dye molecules in nanoparticulate polymers, potentially with UV absorbers, to enhance dye stability against heat, light, and pH changes. The composition forms a durable coating on each hair strand, ensuring long-lasting color.
Overview
This groundbreaking solution focuses on enhancing the stability and longevity of pastel hair dyes by encapsulating dye molecules within nanoparticulate polymers. These polymers may incorporate a UV light-absorbing molecule to further protect against dye fading. Once applied, the composition forms a stable coating on each hair strand, significantly improving resistance to fading caused by heat, light, and pH changes. The technology promises to deliver vibrant, long-lasting pastel colors for consumers.
Technical specifications
- Nanoparticulate encapsulation: Dye molecules are encapsulated in nanoparticles composed of polymers like ethylcellulose or polyacrylonitrile.
- UV protection: Optional integration of UV absorbers helps protect against sun-induced fading.
- Aminated cellulosic dispersion: The nanoparticle dye/polymer composition is dispersed in a pH-sensitive aminated cellulosic polymer, which binds strongly to hair keratin.
- Durable coating: Upon application and rinsing, the composition forms an insoluble coating on hair, enhancing color durability.
Technology readiness level
This technology is currently at TRL 2. Laboratory-based testing is underway to optimize nanoparticle size, encapsulation efficiency, and overall formulation. Future work includes applying formulations to hair swatches and testing color stability under simulated solar conditions.
About De Montfort University
De Montfort University is a comprehensive public university in Leicester that combines professional education with applied, industry‑relevant research for a large and diverse student body. Partners engage through co‑located laboratories and prototyping facilities, design studios, and on‑campus incubation, with contract research, consultancy, and bespoke training. The university supports work‑based learning and participates in Knowledge Transfer Partnerships to structure collaborations and accelerate delivery. Situated in the East Midlands, it offers convenient access to national transport links and a strong regional corridor for manufacturing and the creative economy. Research is supported by UKRI and Innovate UK, with a technology transfer office handling IP, licensing and research contracts.
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