SUNSCREEN COMPOSITIONS

摘要

Sunscreen compositions which comprise a blend of different particle sizes of titanium dioxide are described. The compositions are substantially transparent on the skin but have a ratio of ultraviolet A to ultraviolet B absorption at 370 and 310 nm in the range of 0.25 to 0.6. Preferred compositions comprise 10 to 70 % of titanium dioxide having a mean primary particle size of about 15 nm and at least one further grade of titanium dioxide having a mean primary particle size of between about 30 nm and about 50 nm.