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SunSpheres™ BIO SPF Booster

Award-Winning Bio-derived Biodegradable Sun Protection 

SunSpheres™ BIO SPF Booster is a biobased SPF booster from Dow made through the process of acid hydrolysis of wood pulp. This innovative new product works by a light scattering mechanism that offers effective UV scattering attributed to its high refractive index due to its high crystallinity, crystal size and agglomerate size.

SunSpheres™ BIO SPF Booster works as a natural SPF booster, functioning with both organic and inorganic UV filters with demonstrated in-vitro and in-vivo SPF boosting performance.


In addition to SPF Boosting properties, SunSpheres™ BIO SPF Booster also functions as a multifunctional ingredient, delivering stabilizing, thickening and shear thinning benefits.

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  • INCI Name: Microcrystalline Cellulose
  • Appearance: White/Off White Powder, Micron Size
  • Natural Origin index: 0.97 (In accordance with ISO 16128 guideline)
  • Recommended Use Levels: 1-3%
  • High Refractive Index (1.51 – 1.56)
  • High Crystallinity (>70%)
  • Single Constituent Particles

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Skin care

  • Daily Wear Creams, Lotions

Sun Care

  • Creams, Lotions

Decorative Cosmetics

  • Foundations, Concealers, BB Creams

SunSpheres™ BIO SPF Booster Formulation Benefits

  • Hydrophilic easy-to-use powder
  • Compatible in bio-based formulations
  • Compatible with both inorganic and organic UVB and UVA actives
  • Allows reduced amount of UV filters in formulations
  • Excellent in aesthetically pleasing formulations
  • Suitable for sensitive skin formulations

In-vitro SPF Heat Aging Studies

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