Patent Picks— Emolliency, Antioxidant, Colorstay and Styling Benefits in Hair

By: Rachel L. Grabenhofer

Posted: January 22, 2013

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This patent describes a hydrogen peroxide-containing composition comprising at least one antioxidant and at least one free radical scavenger operable to neutralize reactive oxygen species generated by hydrogen peroxide, and a method for stabilizing hydrogen peroxide-containing compositions.

Silicone polyurethane blends for improved emolliency in hair, skin
US Patent 8,354,478
Publication date: Jan. 15, 2013
Assignee: Alzo International, Inc.

The  present invention describes the unexpected characteristics of blends, including cross-linked reaction products of elastomeric silicone polymers, with various polyurethanes and their applications in personal care products. The constituents are combined in a manner that produces superior characteristics related to the mixture, including enhanced emolliency with greater skin compatibility and wetting. These compositions are particularly useful for hair and skin care products where emolliency, wetting, storage stability and/or film-forming properties are important.

Two-part hair dye
US Patent 8,349,022
Publication date: Jan. 8, 2013
Assignee: Kao Corp.

Described by these inventors is a two-part hair dye composed of a first part containing an alkali agent, a second part containing hydrogen peroxide, and a non-aerosol foamer container for discharging a liquid mixture of the first and second parts in the form of a foam. The liquid mixture comprises: a) a polymer or copolymer containing 70% or more mole fraction of diallyldimethyl quaternary ammonium salt monomer, and b) an N-acylamino acid salt, an N-acyl-N-alkylamino acid salt, or an ether carboxylic acid salt, wherein, an equivalent ratio of the anion site of the component b) to the cation site of the component a) (anion/cation) is more than 1, and a viscosity of the liquid mixture at 25C is 1 to 300 mPas.