[technothrasher]

> Europe has banned the Azo food colourings

Europe has indeed banned some Azo food colorings, however canthaxanthin is not one of them, as far as I am aware. The EU has evaluated the safety of it on multiple occasions and found it safe to consume at the levels used in the food supply.

> Known to cause eye diseases in humans

Extremely excessive intake of tanning pills containing canthaxanthin was shown to cause accumulation of deposits in the retinas of a small number of individuals. Once the intake of pills was stopped, the condition completely cleared up in all individuals effected.