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US 4,379,753 AGranted
Hair care compositions
AssigneeThe Procter & Gamble Company
InventorRaymond E. Bolich, Jr.
Life of this patent
Estimating the term…
Abstract
Metal salts of pyridinethione useful in shampoos, creme rinses and other hair care compositions to deliver antidandruff benefits while not detracting as much as previous pyridinethione salts from the compositions' aesthetics. Compositions containing such salts are also included.
Claims8
Hair care compositions which contain from about 0.2% to about 4.0% of heavy metal, magnesium or aluminum pyridinethione salt crystals which are predominantly flat platelets having a mean sphericity less than about 0.65 and a median equivalent spherical diameter based on volume of at least about 2.mu. but less than about 15.mu..
Dependencies are inferred from the claim text.