Process for the permanent-reshaping of hair and composition for carrying it out containing, in combination, an amino- or amidothiol and at least one inorganic bromide
US5565192A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1994 |
| Grant date | Oct 15, 1996 |
| Priority date | — |
| Expiry date | May 18, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/46
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for permanently reshaping hair consists of applying an amino compound, an amidothiol compound or a salt of an amino compound or an amidothiol compound as a reducing agent to open the keratin bonds of hair and reforming the bonds using an oxidizing composition or aerial oxygen, wherein prior to or simultaneously with the application of the reducing agent, at least one alkali metal, alkaline-earth metal or ammonium bromide is applied to the hair as a doping agent for the reducing agent. A composition for carrying out the process contains at least one amino compound, amidothiol compound or a salt of an amino compound or an amidothiol compound as a reducing agent, at least one alkali metal, alkaline-earth metal or ammonium bromide as a doping agent for the reducing agent, and a suitable cosmetic vehicle. This process and composition enable improved qualities to be obtained in the permanent reshaping of hair, in particular improved curling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.