Patent ID: 8546364

Claim:
A composition of matter comprising: (a) About 0.1% (w/w) hydrocortisone 17-butyrate; (b) About 60% to about 80% (w/w) of a lipid system, (i) Said lipid system comprising at least one omega-6 fatty acid or omega-6 acid ester; (ii) Said lipid system comprising up to about 24% (w/w) of a fatty alcohol (and/or ester formable by condensing said fatty alcohol with a fatty acid); (c) Quantum sufficit of water; (d) Surfactant having a hydrophilic:lipophilic balance of less than about 12; (i) said surfactant present in an amount sufficient to emulsify said lipid system and said water to form an emulsion suitable for topical application; (ii) said emulsion having a pH of less than about 5; (iii) said omega-6 acid or omega-6 acid ester present in an amount whereby said composition of matter contains not more than about 0.05% (w/w) of hydrocortisone 21-butyrate.