yeah you want something like the creopop that uses uv light cured resins.
https://www.creopop.com/

They cost more - both for the pen and the 'ink' than the filament based ones - but are about as safe as you can be .

https://www.amazon.com/CreoPop-Cordl...ywords=creopop

https://www.amazon.com/CreoPop-Print...ywords=creopop

No doubt there are cheap chineses 'copies' around as well :-)