Under following links, you will find all inofrmations about hygiene guidlines of tattooing in The Netherlands:
https://www.rivm.nl/thygienerichtlijnen/atoeeren
https://www.nvwa.nl/onderwerpen/tatoeages-en-permanente-make-up/hygienisch-tatoeeren
Please keep on checking on all the updates on both websites - to be up to date with new regulations!
Please be aware of new rules that will come in 2022 for the tattoo industry in the whole EU.