Elastic cosmetic masks and methods for treating skin
US10940103B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2018 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | Apr 25, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N69/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The instant disclosure relates to masks, methods for making masks, methods for improving film elasticity of masks, and to methods of treating skin with masks. The masks are formed by applying a mask base composition onto a surface, the mask base composition comprising: (i) alginic acid and/or a salt thereof; (ii) hectorite (lithium magnesium sodium silicate); (iii) one or more water-soluble solvents; and (iv) water; and exposing the mask base composition to a crosslinking composition for a time sufficient to crosslink the alginic acid and/or a salt thereof and form a final mask, the crosslinking composition being an aqueous liquid comprising (i) one or more polyvalent cations of one or more metals; and (ii) water. The instant disclosure further relates to masks formed by the disclosed methods and to kits comprising the compositions for making and/or using the masks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.