Does Pancro (lens cleaner) have an expiration date?

[Radost]

I live in the desert and I feel may Pancro expires quickly from the extreme heat. Leaves nasty residue. When I buy it new it is always great. Anybody else have a similar experience?

 

[Sirius Glass]

I live in the desert and I feel may Pancro expires quickly from the extreme heat. Leaves nasty residue. When I buy it new it is always great. Anybody else have a similar experience?

I recommend what I was told when I worked at Kodak, keep the unopened film in the freezer or refrigerator.

 

[Radost]

I am talking about the lens cleaner

 

[Sirius Glass]

I am talking about the lens cleaner

Opps

 

[MattKing]

Thread title updated for clarity.

 

[wiltw]

Most lens cleaners have alcohol content in them, which explains evaporation. For example, from the Material Safety Data Sheet (MSDS) for one product:

Section 3: Composition/ Information on ingredients​

• Ethanol, 2-butoxy (alcohol)
• Ethylene glycol
• Water

Pancro lens cleaner MSDS lists nothing but isopropanol

chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://secure.johnbarry.com.au/img/product/description/JBG.PANCRO%20-%20SDS.pdf

Alcohol has no expiration date.