Eusolex® 232 is a highly effective UV-B filter for the water phase. It is a white powder that can be fully solubilized in water after having completely neutralized it with bases to pH > 7 (e.g. using Sodium Hydroxide, TEA or TRIS). Formulating of clear aqueous gels is possible. Eusolex® 232 is photostable and approved worldwide. Together with oil soluble sunscreens, synergistic SPF′s can be achieved.