Welcome to the Cake Decorators Q&A

How long can you use this product after the expiry date, specially if it has been stored air tight and not removed from the original covering ?

Hi mariamroy

That would be difficult to say because we don’t know what the exact ingredients are in the product.
I would enquire directly on either their facebook https://www.facebook.com/MassaTicinoCARMA
or email them at their website http://www.carma.ch/int/massa-ticino
Better to get it directly from the horse’s mouth! Hope this helps.