Structured Rheological Solid Personal Care Composition

A rheological solid personal care composition comprises a crystallizing agent, a suspension agent, an insoluble active, and an aqueous phase. A process for the manufacture of a rheological solid composition comprises the steps of: provision and heat up of an aqueous solution of sodium chloride, and sodium hydroxide; addition of an emulsifier, preferably palmitic acid, in order to obtain an emulsifier main mix, preferably a sodium palmitate soap main mix; addition of a suspension agent, preferably xanthan gum and glycerin, to the emulsifier main mix; addition of an insoluble active premix to the emulsifier main mix to obtain a blend, the insoluble active premix preferably being a petrolatum-based premix of topical drug actives, the topical drug active preferably selected from the group of: menthol, nutmeg, camphor, eucalyptus, cedar leaf, thymol, and any combinations thereof; cool down of the blend in order to form a crystalline structure of the rheological solid composition; optionally, addition of a hygroscopic stabilizer to the blend in order to stabilize the crystalline structure, the hygroscopic stabilizer preferably being sodium lactate.