>- history of skin cancer ranging from basal to squamous and my skin is very very spotted/pitted from ongoing 'ice' treatments would sooo appreciate thoughts on this topic

My suggestion is to buy a good zapper. I have applied mine directly to the lesions, It stings sort of like the freezing, takes a little bit longer, but they are gone in a couple of days.

It can even get the ones that are so small that they can not see them.

Do not zap to close to the eyes though.