Liquid sunscreen compositions which both deposit and lather well

US6399045B1 · kind B1 · utility

Assignee

• Unilever Home & Personal Care USA, Division of Conopco, Inc. · US

Inventors

• Leslie Jo Morgan · Chatham, US
• Sudhakar Puvvada · Shelton, US
• Liang Sheng Tsaur · Norwood, US
• Michael P. Aronson · West Nyack, US
• Andrew Lam · South San Francisco, US
• Shiji Shen · River Edge, US
• Ernest Weatherley Macaulay · Bebington, GB

Key dates

• Filing date: Mar 10, 2000
• Grant date: Jun 4, 2002
• Expiry date: Mar 10, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/5426
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present invention teaches liquid sunscreen compositions in which level of surfactant is higher than level at which the sunscreen component(s) are still soluble in the surfactant in which they are used; and which comprise minimal levels of cationic polymer. Combination of cationic polymer (especially preferred surfactants and at minimum levels) and minimal levels of sunscreen lead to compositions with minimal levels of deposition and minimal SPF. Further, the compositions also maintain good lather.