Patent · US Active

Process for permanent waving keratin fibers

US12403074B2 · kind B2 · utility

0Cited by

4References

14Claims

0Family size

Assignee

KAO GERMANY GMBH · DE

Inventors

Jörg Schneider · Solothurn, CH
Jens HEILMANN · Lübeck, DE
Sabine SCHAEFER · Darmstadt, DE

Key dates

Filing date	Dec 10, 2019
Grant date	Sep 2, 2025
Priority date	—
Expiry date	Oct 13, 2042

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/884
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Present invention relates to a process for permanent waving keratin fibers, especially human hair, for achieving durable waves wherein fibers are treated with a reducing composition, a non-reducing and non-oxidizing alkaline composition, a non-reducing and non-oxidizing acidic composition and finally an oxidizing composition wherein after processing the reducing composition the fibers are rinsed off.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.