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Sustainable SPF Boosters for Next-Gen Sunscreens

Lignin, a complex aromatic polymer found in plant biomass, has long been an underutilized by-product of biofuel, biogas, and pulp industries. Unlocking its potential through valorization into high-value products is increasingly recognized as a key factor in improving the commercial viability of biorefineries.

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At altM, our work focuses on developing products from every major component of lignocellulosic biomass.

  • Cellulose is engineered into rheology modifiers for paints, coatings, and personal care formulations.
  • Hemicellulose is converted into bioactive and barrier compounds.
  • Lignin is transformed into functional biochemicals that unite performance and sustainability.

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During this development, we created 19 distinct lignin variants, sourced from diverse biomass feedstocks and processed through different fractionation routes under our proprietary altMorph™ platform. Each lignin type exhibits unique structural and functional characteristics.

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Among them, one variant displayed exceptional UV-absorbing and antioxidant properties, making it suitable for photoprotective applications. This discovery led to the development of altScreen™, a lignin-based SPF booster that complements existing UV filters.

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altScreen™ delivers consistent SPF-enhancing performance at low concentrations, improving filter stability and reducing white cast in formulations. Developed through altM’s biorefinery expertise and proprietary processing, it is biodegradable, photostable, and environmentally safe.

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In formulation studies, incorporation of just 2% altScreen™ increased the overall SPF by approximately 2.87-fold, highlighting its efficiency as a natural SPF booster.

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This work demonstrates how high-quality research and process control can unlock the hidden potential of biomass components, creating new commercial opportunities while advancing sustainable innovation.

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By applying advanced fractionation and integrated process design, biorefineries can move beyond fuels to produce functional biochemicals, bioactives, and high-performance additives while maintaining economic viability.

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