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Nano zinc oxide

Zinc oxide is a highly effective component widely used in baby care products. Its anti-inflammatory properties are generally well known in cosmetics and have been widely utilized for decades in care creams. The advantages of zincoxide compared to traditional UV filters are many and varied.

And – in volume terms – the minutest of quantities are sufficient in order to achieve the desired effect. 
Nevertheless, around 400 billion 
nano zinc oxide particles measuring around 50 nm are applied to each cm2 of a fabric weighing 100 g/m2. In contrast to traditional UV filters, zinc oxide is toxicologically harmless and generally highly tolerable. There  are no known allergies triggered by zinc oxide. 
 Nano ZnO particles. Average
 particle size: 50 nanometers.

More Info
Washability
UV protection levels
UV standard 801