Technically Speaking: Formulation Technologies and Other Topics

Skin-warming massage compositions:
Kosei Co. Ltd., Japan, describes skin-warming massage compositions containing glycerin, glycerin-modified silicones and heat-generating salts.1 The compositions consist of a first phase containing glycerin and a glycerin-modified silicone, and a second phase containing a cosmetically applicable salt that generates heat by dissolving in water, wherein the first and second phases are mixed before application. Either phase may further contain spherical powders. An example formula includes a first phase containing 50% glycerin, polyglycerin-modified silicone, fragrance, preservative, colorant and water; and a second phase containing calcium chloride, colorant and a preservative. The massage composition is said to spread smoothly on the skin and have excellent storage stability.

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