The Effect Of Packaging Materials On The Stability Of Sunscreen Emulsions

The purpose of this research was to study the stability of an emulsion containing UVA, UVB and infrared sunscreens after storage in different types of packaging materials (glass and plastic flasks; plastic and metallic tubes). The samples, emulsions containing benzophenone-3, octyl methoxycinnamate, and Phycocorail, were stored at 10, 25, 35 and 45 deg C and representative samples were analysed after 2, 7, 30, 60, and 90 days period. The stability studies were conducted by analyzing samples at pre-determined intervals by high performance liquid chromatography (HPLC) along with periodic rheological measurements.