Inventors:
Larry Rich Robinson - Loveland OH, US
Gary Robert Kelm - Cincinnati OH, US
Denver Michael Faulk - Hyde Park OH, US
International Classification:
A61K 8/92
A61K 8/30
A61K 8/84
A61Q 19/00
A61Q 5/06
Abstract:
A personal-care composition in the form of an oil-in-water emulsion comprises a water phase, an oil phase, an anionic pairing agent, a cationic active, and an anionic thickener. In one embodiment, the anionic pairing agent is pre-formed from the neutralization of an acid with a base. In another embodiment, the anionic pairing agent is formed in situ from the neutralization of an acid with a base. At least 25% by weight of the cationic active is present in the oil phase. In certain embodiments, a method for regulating keratinous tissue condition and a method for improving deliverability of a cationic active in the presence of an anionic thickener comprise the steps of: providing the aforementioned personal-care composition, and applying the composition to keratinous tissue in need of treatment. The personal-care composition allows for previously unattainable levels of the cationic active to locate within the oil phase of the emulsion.