Yes, I have had dry skin with hypo and have made sure I had oils internally to help with that. I consume coconut oil, olive oil, grass fed butter, and fish oil. The only oil I put on my skin is coconut and have used it around my eyes for years as well.
But, this is sudden and new in the past few days. I will do a smaller amount of borax every other day to see if that is the culprit. I cannot imagine it would be the Iodine causing that dryness but wasn't sure.