tattoo with ashes
http://lorenzoridj094.edublogs.org/2019/07/25/whats-the-current-profit-market-for-tattoo-with-ashes-in-the-ink-professionals-like/
When a body is consumed, the remaining bone material won't be like dust but more like small grains or a sand-like resemblance. Bubblegum Ink use modern day machinery from the US to decrease and replicate the particle