Process for permanent waving keratin fibers
US12409120B2 · kind B2 · utility
0Cited by
5References
8Claims
0Family size
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Key dates
| Filing date | Jun 29, 2022 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | Jan 3, 2044 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/884
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compositions and processes disclosed herein permanent wave keratin fibers and/or human hair for achieving durable waves. The keratin fibers and/or human hair are treated with a reducing composition, a non-reducing and non-oxidizing composition comprising tris(hydroxymethyl)aminomethane, optionally a non-reducing and non-oxidizing acidic composition. Subsequently, the keratin fibers and/or human hair are treated with an oxidizing composition wherein after processing the reducing composition is rinsed off the keratin fibers and/or human hair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.