The DMT molecule it self can last very long time but because of changing temps  it can oxadise ..and melt back to a goo...

It can also be discovered by the wrong people who may analize it and find its dmt..!

Being in an IPA tincher it would look and smell like the leagle product on the lable reducing risk to the person...

But being suspended in alcohol.. it would be easier to handle and aply by  giving  it  a simple shake to mix it  just before aplying..

By putting a few drops on a ceramic stone is super easy.. as IPA would dry quiuckly and more drops could be  added. as the IPA pushes the liquid dmt compleatly into the stone ..without the need to pre heat the stone!

As long as  one has a good idea of measuring the doses...this should be a very easy way to store and aply the DMT...

As long as the spice doesnt degrade in IPA and i dont think it would to soon!