Stabilization of cosmetic compositions
A composition of matter is used as an ingredient in cosmetics comprising at least 0.5% by weight and preferably 1-30% by weight of highly refined cellulose fiber in a cosmetic composition. Additionally present in the composition are other conventional cosmetic ingredients as known in the art. This composition may include at least colorants (dyes and pigments), lipophilic materials, aqueous materials (water and aqueous solutions), waxes, binding agents (polymers, thickening agents), emollients, emulsifiers, thickening agents, antioxidants, natural and synthetic oils and extracts, clays, ultraviolet radiation absorbers, and the like.
1. A method of oil-migration stabilizing a cosmetic product or personal care product against effects of internal migration or blushing of oil:
a) providing a highly refined cellulose fiber composition consisting of plant cells at least 50% by weight of the plant cells derived from cells having exclusively parenchymal cell walls, highly refined cellulose fiber of the highly refined cellulose fiber composition having a water holding capacity greater than five parts water per part fiber and being free of acid bleaching and NaOH chemical processing;
b) combining the highly refined cellulose fiber with a liquid carrier that is either hydrophilic or hydrophobic to form a first additive composition;
c) combining the first additive composition formed in step b) with at least one ingredient selected from the class of polymers, waxes and oils to form a cosmetic product or personal care product having a final composition with at least 3% by total weight of oil; and
d) storing the cosmetic product or personal care product.
2. The method of claim 1 wherein parenchymal cells consist essentially of citrus fruit cells free of chemical treatment and free of treatment with NaOH and the cosmetic product or personal care product has a thickness of 5 mm, when stored in a open container under conditions of 30° C., 50% relative humidity and 760 mm Hg pressure for 72 hours will retain a composition having a percentage of total oil/weight of composition to a depth of 0.5 mm that is no more than 3% greater in concentration of oil/total weight of the composition as compared to an original oil/total weight percentage of the cosmetic product or personal care product.
3. The method of claim 1 wherein the parenchymal cells consist essentially of citrus fruit cells that have not been exposed to NaOH solutions during refinement.
4. A method of moisture stabilizing a cosmetic product or personal care product against effects of exposure to humidity comprising the steps of:
a) providing a highly refined cellulose fiber composition comprising citrus fruit parenchymal cells free of chemical treatment and free of treatment with NaOH, the highly refined cellulose fiber, derived from plant cells having exclusively parenchymals, having a water holding capacity greater than five parts water per part fiber and being free of acid bleaching or NaOH chemical processing;
b) combining the highly refined cellulose fiber with a liquid carrier that is either hydrophilic or hydrophobic to form a first additive composition;
c) combining the first additive composition formed in step b) with at least one ingredient selected from the class of polymers, waxes and oils to form a cosmetic product or personal care product having a final composition; and
d) storing the cosmetic product or personal care product.