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With consumers becoming more and more educated about the need to protect their skin, increasingly higher SPF are required against damaging effects of UVA and UVB rays. The pleasantness of the formulation itself remains a strong choice criterium for final users, but the potential environmental impact of cosmetic products has also become an important pillar in the purchase process evaluation.

These elements have led to an increase in the total amount of UV filters in sun care formulations and, lately, a rise of physical sunscreens, sometimes at the expenses of the chemical ones, has also been observed.

Increased levels of physical UV filters can have two main drawbacks: they usually come in powder form and their incorporation in high amounts can ...