Researchers at Stockholm University have unveiled a bio-based hair conditioner using lignin gel emulsions. This sustainable innovation could revolutionize the haircare industry by offering an eco-friendly alternative to conventional products.
In an inspiring leap towards sustainable personal care, researchers at Stockholm University have developed a fully bio-based hair conditioner that leverages the natural properties of lignin gel emulsions. This innovative formulation offers a sustainable and environmentally friendly alternative to traditional haircare products, which often rely on synthetic ingredients derived from petroleum and oleochemicals.
Conventional hair conditioners generally contain between 20 and 30 ingredients, many of which raise significant sustainability and environmental concerns. However, the new study, published in Science Advances, demonstrates that micellar lignin gels can effectively stabilize emulsions with natural oils. This reduces the need for synthetic surfactants and other complex stabilizers commonly found in commercial products.
Led by Mika Sipponen, an assistant professor in the Department of Chemistry, the research team explored the potential of lignin — a common and renewable component found in wood biomass — as a multifunctional ingredient for hair conditioning.
“Our findings highlight lignin’s potential as a stabilizer in oil-in-water emulsions, enabling a more natural and sustainable approach to hair conditioning,” Sipponen said in a news release. “By using wood-derived lignin directly without any chemical modification, we not only simplify the ingredient list but also eliminate the need for organic solvents, making the process more eco-friendly.”
The lignin gel-based conditioner was rigorously tested against a commercial hair conditioner, revealing comparable emulsion stability, viscosity and conditioning performance.
Notably, a formulation containing 6% coconut oil demonstrated an impressive ability to lubricate damaged hair, reducing the wet combing force by 13%. These results were confirmed through combing force measurements and multiscale microscopy analysis.
Importantly, despite its dark color, the product was easily rinsed off from paper and skin with cold water, underscoring its practicality and user-friendliness.
Ievgen Pylypchuk, a key contributor to the development of the lignin gel, pointed out the broader applications of this versatile material, adding: “Our lignin gel technology extends beyond personal care applications. Its unique ability to stabilize emulsions and interact with various biomolecules opens opportunities in cosmetics, food and even biomedical formulations, offering a sustainable alternative to conventional ingredients.”
This innovation in bio-based formulations is poised to pave the way for greener haircare solutions, according to the study. It aligns perfectly with the growing consumer demand for sustainable personal care products. Going forward, the researchers intend to further explore lignin-based formulations for an even wider array of applications in the personal care industry.
The study represents a step forward in the quest for environmentally benign personal care solutions, marking a noteworthy achievement in the sustainable science landscape.