[eljot88]

I’ve just come across blueplanet ink that offer self erasing ink have you used this before

Not from that supplier.

How long does It take for the Ink to completely disappear?

If you print with "saving ink" option, the label isn't readable/scannable after 4-5hours in my case. The question is, what is the best moment to give the return box to the courier - at the start of the day, and label will disappear in courier truck, or at the end of the day, and label will disappear in warehouse...