Process for the permanent shaping of the regrowth of hair and composition therefore

US4660580A · kind A · utility

Assignee

• Wella GmbH · DE

Inventors

• Dietrich Hoch · Pfungstadt, DE
• Theodor Wajaroff · Darmstadt, DE
• Eugen Konrad · Darmstadt, DE

Key dates

• Filing date: Aug 10, 1984
• Grant date: Apr 28, 1987
• Expiry date: Aug 10, 2004

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q5/04
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Process for a selective permanent shaping of the regrowth of hair, whereby the hair is at first treated with a liquid aqueous pretreatment substance, is rolled onto rollers, is treated with a aqueous reducing permanent shaping substance, rinsing, fixing it oxidatively and further treating it in a customaty manner, characterized in that the pretreatment and the permanent shaping substance is so selected that they form a separating layer at their contact face (uppermost layers of the rolled up hair) during contact, thus making an admixture of the pretreatment substance with the permanent substance more difficult or prevent it. Suitable combinations are for example: Pre=treatment substance containing either a high polymeric polycarboxylic acid polymer, whereby at least 25% Mol of these polymers consists of a free carboxylic acid group, or a water soluble aluminum salt in combination with an alkalic permanent shaping substance.