Nickel & allergy
Embed Widgets · Updated July 2026
Chart Widgets You Can Embed in One Click
13 live, sourced charts on nickel allergy, piercing safety, jewellery materials, tattoo removal and EU regulation. Preview each one exactly as it will appear, filter to what you need, and copy a single line of code. Free for newsrooms, blogs and classrooms under CC BY 4.0.
1 Filter or search2 Copy the embed code3 Paste it in — it stays current
Every widget renders live from this site, so the numbers never go stale, and each one carries a do-follow credit back to the sourced statistics page it comes from. Prefer to read the data first? Browse the full Poli Data library, grouped by topic with every primary source linked. Using a CMS that supports oEmbed (WordPress, Ghost, and others)? Just paste the widget URL and it embeds itself.
Showing 13 of 13 charts
Regulation
Nickel allergy in women 18–35, before vs after the EU Nickel Directive
Nickel & allergy
Nickel allergy prevalence in Europe
Materials
Nickel content of common body-jewellery materials (% by weight)
Materials
Nickel content by weight, common body-jewellery materials
Industry
Distribution of non-earlobe piercing sites
Piercing safety
Reported piercing complication rates
Piercing safety
Minor infection rate, cartilage vs soft-tissue piercings
Materials
Gingival recession by oral-jewellery material
Regulation
REACH nickel-migration limits (µg/cm²/week)
Regulation
REACH heavy-metal content limits for jewellery (ppm)
Piercing safety
Piercing complication rate by site
Tattoo removal
Estimated laser sessions by Kirby-Desai score
Free to use, with attribution
All Poli chart widgets are released under Creative Commons Attribution 4.0. Embed, reproduce or adapt them, including commercially, as long as you keep the credit to Poli International, which the embed does for you. Need a chart we do not have yet, the raw dataset, or expert comment from a body-art material specialist? Email info@poliinternational.com.