Mending hair damage with polyelectrolyte complexes
US7837983B2 · kind B2 · utility
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10References
38Claims
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Key dates
| Filing date | Jul 11, 2006 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | May 22, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/594
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Polyelectrolyte complexes between anionic and cationic polymers are used to mend damaged hair fibers, especially damage exhibited by split ends. An improved test method designed for the assessment of the degree of split end repair is described which consists of tagging hair fibers and observing the repair process by stereomicroscopy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.