I've seen some listings of Jane Iredale Liquid Minerals products that are clearly not good.  Here are some tips to avoid getting expired Jane Iredale Liquid Minerals :

The Jane Iredale boxes tell the age of the product.  If the box has a yellowish stripe on the packaging it's too old.  These Jane Iredale Liquid Minerals  are prior to them having expiration dates.  If there is no expiration date on a Jane Iredale Liquid Foundation do not get it.

If the Jane Iredale box is solid blue with no stripe at all it's very old.  It definitely won't have a expiration date on it.  It's past dead.  The product will probably look very cloudy when it's supposed to be clear between the color beads.

The white boxes are to comply with the UK standards for packaging. You still need to rely on the expiration date to know if it's good. 

The blue box with a white stripe is the current style along with the white UK box.  Any Jane Iredale Liquid Minerals in these would have the expiration on the side of the box and on the bottom of the product.  The expiration date is about 2 years from the time of production.