In 2017, the Scientific Committee on Consumer Safety (SCCS) warned that they should revise their recommendations if any new evidence emerges in the future related to the potentially harmful effects of TiO₂NPs used in a sunscreen formulation or if they can penetrate the skin. In fact, our work could contribute to this matter because it evaluated the skin penetration of a particular kind of TiO₂NPs. [8]

It is a national high-tech enterprise, a national top 500 chemical enterprise, and the largest titanium dioxide exporter in China. The main products are TiO2, zirconium products, sulfuric acid and sulfate. Among them, titanium dioxide has reached 120,000 tons, and its export volume has ranked first in the country for three consecutive years. The annual production capacity of the main titanium dioxide is 600,000 tons, ranking first in Asia and fourth in the world.

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Titanium is a metal element found naturally in the environment. When it's exposed to oxygen in the air, it forms titanium oxides that are contained in many minerals, sands, soils, and dusts.