^^^Please note that Bookbinder's post seems only to refer to the basic 'Bonjela' (which has been around for donkeys' years and offers good pain relief).
However, in order to get ulcers/blisters to heal quickly, it often used to be necessary to buy an additional product to spread across the damaged tissue, in order to 'seal' it.
The manufacturers of Bonjela have now combined the two products into one, giving the world 'Bonjela Complete Plus'. It's that 'dual purpose' product that I've recommended, rather than just (ordinary) 'Bonjela'.