US Patent No. 12,472,132 B2 (Debbie Lynn Hartsell, Kim Lynn Webb, Kathleen Marie Kerr, Karen Marie Osorio, Matthew Joseph Linser, Emma Lynne Klingman); The Procter & Gamble Company patented a system for treating scalp itch, flaking, scaling, plaques and/or dryness with a leave-in treatment.

The topical composition comprises 0.1-10% laureth-9, greater than about 60% water, less than about 5% of ethanol, methanol, iso-propanol, n-propanol, or a mixture thereof, and less than about 5% of an ionic surfactant selected from the group consisting of sodium laureth sulfate, sodium lauryl sulfate, TEA lauryl sulfate, sodium lauroyl sarcosinate, sodium stearate, sodium olefin sulfonate, disodium laureth sulfosuccinate, disodium oleamine sulfosuccinate, sodium dioctyl sulfosuccinate, isethionates, taurates, cetrimonium bromide, cetylpyridinium chloride, sodium lauriminodipropionate, disodium lauroamphodiacetate, cocamido propyl betaine, and mixtures thereof.

It has composition has a viscosity of approximately 1,500-20,000 cPs and a pH of 3.0-6.9.

The patent also details an applicator with a reservoir configured to contain approximately 25-600 g of the composition and one or more nozzles.