I used one of those "nozzles" to insert KY deep inside before dilation, and it made dilating much more comfortable.
At about four months post-op, my doctor recommended I try it with Vagisil lubricant because he said things seemed kind of dry during the exam, and it seemed to help a lot - although I still used it for dilating, so that might have helped keep the lubricant inside for a while. Anyway, for what it's worth, the doctor says Vagisil is what he recommends to cis women with dryness issues as well, when he or they don't want to go to the big guns and use estrogen cream.
(I had penile inversion a little over a year ago.)