Many of the classic UV filters have also been coming under scrutiny in recent years. Through the years, UV filters have predominantly been chemical filters that absorb & dissipate UV rays. Two specific chemical filters, oxybenzone & octinoxate, are coming under fire for their pollution of the environment, specifically their effects on coral.
In 2018, Hawaii implemented the world’s first ban on chemical sunscreens containing the chemicals oxybenzone & octinoxate, to come into effect on January 1, 2021.
Mineral UV filters, ZnO & TiO2, form a physical barrier on the skin that deflects & scatters UV rays. Mineral sunscreens are becoming increasingly more popular as they offer more extensive broad-spectrum protection, have higher photostability & lower instances of allergic reactions than chemical sunscreens.
ZnO is a globally approved natural mineral ingredient, considered the most effective UV filter in broad-spectrum sunscreen, providing extensive protection against both UVA & UVB rays. Micronised & nanoparticle mineral filters were developed in the 21st century in order to overcome the unpleasant thickness & white cast associated with traditional mineral UV filters.