Copied from the Zaino website FAQ on 2005-11-24...


A 70° room temperature is best for the longevity of Zaino products. Due to 
the optical additives used, extreme heat or cold can result in a decrease 
in gloss-enhancing properties.

When stored at average room temperature between 65° and 75° degrees, shelf 
life is as follows:

  	Z-PC 	3+ years
  	Z-1 	For optimum results, use before 3 years.
  	Z-2 	For optimum results, use before 3 years.
  	Z-3 	For optimum results, use before 3 years.
  	Z-5 	For optimum results, use before 3 years.
  	Z-6 	5+ years
  	Z-7 	5+ years
  	Z-8 	5+ years
  	Z-9 	5+ years
  	Z-10 	For optimum results, use before 2 years.
  	Z-12 	For optimum results, use before 2 years.
  	Z-14 	For optimum results, use before 2 years.
  	Z-16 	3 to 5 years
  	Z-18 	5 years +
  	ZFX 	For optimum results, keep tightly capped, 
		 avoiding moisture. Use before 18 months.