| abstract |
Described herein are hollow silica particles, processes for making hollow silica particles, and uses of hollow silica particles in sun care compositions. To form the hollow silica particles, swellable latex seeds are used to template the deposition of continuous silica shell, and voids are created by collapsing the swollen latex upon drying. Preferably, the process for making hollow silica particles comprises forming latex seeds for use as a template, depositing silica shells on the latex seeds, and collapsing the latex seeds to afford hollow silica particles. |