Patents

P&G Patents Method To Straighten Hair Using Sugar

Arabinose is the sugar in this recently awarded US patent.

US Patent No. 11,154,480 B2 (Randy Purnell Washington, Jamie Angel Reed, Alan David Willey, Stevan A. Samuel); The Procter and Gamble Company has patented a method to straighten curly hair. It entails providing in a package a solid composition of a hydrophobically modified alkali soluble acrylic polymer emulsion, arabinose as the sole sugar in the composition and a photocatalyst being a mixture of 8-hydroxyquinoline and 8-quinolinol-1-oxide—and then mixing the solid composition with a cosmetically acceptable carrier to form a crosslinking composition.

The crosslinking composition is applied to curly hair at a level of 0.25 grams of composition per gram of hair, mechanically straightening the keratin fibers with a hair straightening appliance, which is at a temperature of about 50-180°C. while exposing the composition to electromagnetic radiation having a wavelength of about 380 nm.

The hair is not subjected to a relaxer prior to step and the method does include a rinsing step.

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