Mostly blister relief, cleaned up older heel blisters and then cleaned , medicated then applied some " second skin, a thin film and installed some cushioning around both newer ones. Wrapped everything nicely in those hard to reach places. Gave me some supplies to go. 26 euros
I have a suggestion if you do not receive an answer. Caminoteca store in Pamplona, is run by a many time pilgrim and was a huge help to the lady I was walking with. He trimmed the soles of her shoes to prevent future blisters. I am sure he can assist you in finding the help you need with your feet. Buen Camino
I was also about to suggest Caminoteca in Pamplona. It’s just down from the Catedral, past the Bistrot café on the corner (side note: they have very weird art installation toilets in the Bistrot). I had a long chat with the owner of Caminoteca the other week about my very small blisters, which I didn’t want worsening. He’s a mine of knowledge, a really lovely man, and has everything you might need for every aspect of the Camino.