I'd recommend using CDS instead of Miracle-Mineral-Supplement for topical applications, as the acid will likely cause more grief than relief.
With that said, and in the event that you do not know what CDS is, you can google; how to make CDS using the shotglass method
The instruction can be found in the first PDF document
PS. if you're intent on getting better absorption into the skin, you could consider adding a drop (LITERALLY 1 DROP) of DMSO to your solution - this will improve the trans-dermal effectiveness of the CDS.