Amazon’s policies require that certain invisible ink pens sold through the Amazon website meet specified certification standards. In order to sell these products on Amazon, you must apply by submitting the following to email@example.com:
|US||ASTM F963-16 or ASTM-F963-17|
A pen with transparent ink and integrated UV light.
All invisible ink pens not meeting toy standards, but being offered as toys, are restricted for sale on Amazon. Invisible ink pens not being marketed as toys and being offered outside of child-related categories are OK for sale.