Advanced Polymer Systems, Inc.

Christine Jy Liau

Michael Froix

Tai Chun Cheng

Martin A Katz

Sergio Nacht

Richard Won

Robert P Eury

Ionic compositions comprise an active ingredient absorbed within a network of internal pores defined by a plurality of polymeric particles. The particles are preferably crosslinked polymeric beads having a diameter in the range from about 5 to 100 microns and a surface charge density from about 0.1 to 10 meq/qm hydrogen ion capacity. The active ingredients are released from the ionic polymer beads over time when orally administered, applied to a keratinic material, typically human skin or hair or otherwise delivered to a target environment. The use of a cationic charge promotes adhesion of the beads to the keratinic material.

Ionic beads useful for controlled release and adsorption

Ionic beads for controlled release and adsorption

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Mountain View, CA, United States of America

Christine Jy Liau