Can I use ichthammol ointment on pustules that haven't came to surface yet. I have clear skin, but here and their a pustle may appear?

ICHTHAMMOL. DOCTORS ARE TRYING TO WEAN PEOPLE OFF ICHTHAMMOL. TOO MANY SIDE EFFECTS. FOR THE PUSTULES THAT DEVELOP, I WOULD RECOMMEND THAT YOU SEE A DERMATOLOGIST TO FIND OUT WHY YOU ARE GETTING THEM. GOOD LUCK.