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Slide deck from my presentation at the Paradise Tattoo Gathering in 2024. This is a high level overview of pigment chemistry, physiology, and complications.

1. Check the packaging or product listing for the steel grade (usually 304 or 316L stainless steel) 2. Go to the manufacturer's website and look for a spec sheet, SDS, or material data page 3. If it's not listed, email their support team and ask for the Material Certificate or Mill Test Report (MTR) — they're required to have one 4. Cross-reference the grade with publicly available ASTM or ISO standards (e.g., ASTM F138 for 316LVM surgical implant grade) The MTR will show you

pmc.ncbi.nlm.nih.gov/articles/PMC6710876/ This was the first study to investigate and confirm that metal particles from tattoo needles themselves (not just the ink) get deposited in human skin and then translocate to lymph nodes. Here's what they found: Although tattoo needles contain high amounts of sensitizing elements like nickel (6-8%) and chromium (15-20%), their influence on metal deposition in skin had never been investigated. The researchers reported the deposition of

Recently I came across this study: I strongly believe that this result or conclusion may be biased and requires more research and a...

Hannah zoomed in with Steph Bastian in April about "The Science of Tattooing" and how the project has been developing into 2020. Find...

In November, Hannah sat down with the wonderful Andrew Stortz to talk about The Science of Tattooing.

Physical books are now available through amazon. Pre-sale on hardcover limited edition will begin in the next month or two. click on...

You can click on the "store" portion of our website or go directly to Amazon.com: https://www.amazon.com/dp/B0838N9L43/ref=cm_sw_em_r_mt_...

It is a long time coming. The Science of Tattooing is now in peer review.

http://www.chemistryexplained.com/Ny-Pi/Pigments.html?fbclid=IwAR1Fl4YR3y6VbbEmMYNmI4nKMycMWa-l2PAWmsgLzg4yaJTvSzGTzAYhsPo

Papulo-Nodular Reactions in Black Tattoos as Markers of Sarcoidosis: Study of 92 Tattoo Reactions from a Hospital Material...