Topical compositions and methods for treating Pseudofolliculitis barbae and ingrown hair
US6001340A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1993 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Mar 30, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/37
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Topical compositions and methods are disclosed for the treatment of pseudofolliculitis barbae and ingrown hair. The compositions comprise acetylsalicylic acid, propylene glycol, glycerine, and isopropyl alcohol. The method involves the step of applying the composition to the beard areas of the face after shaving. The acetylsalicylic acid is dissolved in a solvent mixture comprising propylene glycol, glycerine, and isopropyl alcohol. The acetylsalicylic acid is present in the range of between about 5 percent by weight per unit volume of the solvent mixture up to saturation of the solvent mixture. The solvent mixture comprises propylene glycol in the range of about 5 to 15 percent by volume, glycerine in the range of about 1 to 10 percent by volume, and the balance of the volume made up with isopropyl alcohol alone or a solution comprising at least 50 percent by volume of isopropyl alcohol. The isopropyl alcohol can be in a solution with water, methanol, or ethanol, provided that the polarity of the resulting solution is not so high that the acetylsalicylic acid would readily precipitate from the solution at ordinary room temperature ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.