"Diluting" it with 1/3 coconut oil wasn't working.
Sorry to hear about those pruney fingertips. I do have a vague memory of reading that can happen. Perhaps a reason I've not experienced it is I always mix my 70% DMSO with magnesium oil--in a 1:2 ratio. So the DMSO is diluted down 2/3 more with that combination.
I've never tried mixing DMSO with coconut oil. You may have misunderstood me when I said I apply a small amount of coconut oil to my skin if I'm experiencing a prickly sensation. Soothes out that prickly sensation very quickly, as much as 90% within a couple of minutes or so.