Zinc Oxides – Uptake

Since zinx oxide (ZnO) nanoparticles occur in cosmetic products, textiles or plastics as bound particles, it is rather improbable that they are taken up via the lung. Instead, inhalation may occur during particle production and processing.

Since zinc oxide (ZnO) nanoparticles are used as UV protection in suncreams and cosmetics, it is very important to know whether they can be taken up via the skin.

Although zinc oxide (ZnO) nanoparticles are not primarily used in food, they may be taken up by swallowing (e.g. of sunscreen).


 The element zinc is essential for all living things in small doses, but is known to be toxic in high doses. This observation is reflected in the results on the toxicity of zinc oxide nanoparticles. In general, zinc oxide particles dissolve very rapidly in liquids, so that zinc ions are always present in addition to the particles. For zinc oxide comparative investigations have been carried out in various test organisms on the action of zinc salts, micro- and nanoscale particles.


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