Patent ID: 6793930
Filing Date: 2004-09-21
Classification: A61L

Abstract:
A rheologically stable skin care composition comprising:(a) about 45 wt % to about 55 wt % petrolatum; (b) about 5 wt % to about 20 wt % zinc oxide; (c) about 0.5 wt % to about 10 wt % of at least one rheological agent selected from the group consisting of fumed silica, organoclays, calcium silicate, polymeric thickeners, natural or organic thickeners, anionic surfactants, and mixtures thereof; (d) about 25 wt % to about 35 wt % behenyl alcohol; (e) about 1.5 wt % C2-C44 ester; and (f) about 0.2 wt % polyglyceryl ester; wherein the composition has:(i) an elastic modulus of at least about 5 dynes/cm2 measured at a strain rate of 0.2%, an oscillation frequency of 10 rad/sec, and a temperature of 77Â° C.; (ii) a melting temperature of at least 35Â° C.; and (iii) a solid or semi-solid consistency at 20Â° C.; and the composition is at least partially transferable to human skin via direct application or a delivery vehicle.