Dyeing composition for hair
US7416566B2 · kind B2 · utility
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Key dates
| Filing date | Oct 19, 2005 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Sep 29, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/9794
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed herein is a hair dyeing composition. The composition induces swelling of hair to expand the cortex by the use of arginine, which is a constituent ingredient of hair, and as a result, effectively allows a colorant to infiltrate into the cuticle, thereby increasing the dyeing rate. Therefore, the composition can markedly decrease the dyeing time to 1˜5 minutes from 20˜30 minutes required in conventional hair dyeing compositions. In addition, the combined effects of aloe vera gel, ceramide and hair keratin enables prevention of damage to the hair during dyeing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.