Film-formers are advantageous to suncare formulations for providing an even coverage of the product and for provideing water-resistantance. Since skin is an uneven surface, product is likely to settle into the texture of the skin, creating patchy coverage of the product. A film former enables complete, uniform product coverage which contributes to water resistance, sweat resistance, and transfer resistance (in color cosmetics).
Effective film formers can be particularly difficult to find when moving to a “clean” label or natural formulation. LexFilm® Sun Natural is an excellent option because it is 100% biobased (certified as part of the USDA BioPreferred® program), vegan, and COSMOS and NSF/ANSI 305 compliant. LexFilm® Sun Natural is a film forming polymer that provides uniform coverage, consistent film thickness, and water-resistance which sustains SPF values in formulation.
Inorganic UV Filter Dispersing:
We’ve all seen those babies at the beach with white faces smothered in zinc oxide. Formulations with zinc oxide and titanium dioxide have become more sophisticated and with the potential for reduced whitening, inorganic UV filters are becoming more desirable to use in traditional and non-traditional suncare formulations. One of the ways to reduce the whitening effect is to disperse them in emollients before adding into formulation. Whether the inorganic filters have been coated or not, dispersing them in formulation is generally advised. Silicones are frequently used as UV filter dispersants, but these ingredients have their own environmental concerns, particularly their poor biodegradability profiles. Silicone alternatives like LexFeel® WOW and LexFeel® WOW-DT are readily biodegradable and 100% biobased (certified as part of the USDA BioPreferred® program). They disperse inorganic UV filters as well as cyclomethicones and have a consumer-preferred sensory profile.
Clean Label Sun Care in Action
Check out this SPF 80 Sunscreen (UV-1037) to see a high SPF value achieved with Hawaii and Key West compliant organic filters, used in combination with UV solubilizer, LexFeel® 7, and film-former, LexFilm® Sun Natural.
Check out Natural Glow CC Cream (CC-1044) to see the benefits of LexFilm® Sun Natural and LexFeel® Natural combined with Titanium Dioxide to create a 100% natural light-to-medium coverage CC-cream.
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