How Fresh Is My ArtResin?
Channel: ArtResin
Date: 23/07/2019

http://www.artresin.com

ArtResin has a shelf life of 12 months from the manufacture date if the bottles are unopened, and 6 months once it has been opened.  As of April 2019, you can find the manufacture date, or born on date, on all of our labels to make it easy to track how fresh your ArtResin is!

The shelf life refers to the clarity of the product and how long you can expect ArtResin to stay looking just as clear as the day it was made.⁣ After the shelf life, you may notice that the hardener starting to yellow in the bottle.  This yellowing is due to oxygen exposure ( oxidation ) much like the browning of an apple once it is cut and exposed to air. ⁣ ⁣To delay oxidization, always ensure you re-cap the bottle as soon as you finish pouring your hardener.

If your ArtResin has passed its shelf life, you can still use it, so please don't throw it out!  As long as you measure and mix properly, the chemical reaction will still take place and product will still cure as expected, even if the hardener has turned a little yellow.  It can still be used for many projects including over wood, for tinting, for making alcohol ink coasters or over brightly colored artwork. 
To learn more, please see our blog What Can You Do With Yellow Hardener?
https://www.artresin.com/blogs/artresin/what-can-you-do-with-yellowed-hardener-and-resin

Keep in mind that yellowing from oxidation is entirely different than yellowing caused by UV exposure, but not to worry ... we’ve got you covered there too!  Even when cured, you can expect ArtResin to stay clear for the longterm: it’s chemically engineered to protect your work from the damaging effects of UV.⁣