So, I have a bunch of soaks going-- Most with the grain alcohol I got left but also 2 with isopropyl alcohol. One striking difference is that the grain alcohol turns dark brown/red quickly, whereas the iso soaks remain fairly translucent. Does this indicate inferior absorption by the iso?

Also, the powder in the iso soaks sticks to the bottom of the jar a lot more compared to grain alcohol soaks, so it is harder to make the material swirl around in the liquid.