ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,766,080, issued on Oct. 20, was assigned to The Procter & Gamble Co. (Cincinnati).

"Personal care composition preservatives level optimization" was invented by Debora W. Chang (Mason, Ohio), Eric Scott Johnson (Hamilton, Ohio), Matthew Francis Kuhar (Cincinnati) and Beth Anne Muir (Tipp City, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is direct to a hair care composition comprising from about 8 to about 17% of one or more surfactants; from about 0.1-0.25% of salicylate salts or acids; from about 0.1-0.25% of benzoate salts or acids wherein there is a weight ratio of about 1:1 to 2.5:1 for the salicylate salts or acids to s...