As new variants and increasing incidences appear, while at the same time mask mandates for public indoor spaces are lifted (…), mask upgrades and mask optimisation are once more discussed widely – and more often than not, the topic is oversimplified. Therefore, I would like to summarize our various DIY approaches to making masks safer and more efficient for the new challenges we’re all facing these days! For further information, you’ll find links in the text. ➔