I've never used it because I was told that when inhaled the ingredients (or previous ingredients anyway, its been years) can dry mucous membranes, affect the baby's breathing and causing lung damage which leads to lead to shortness of breath and wheezing. Even pneumonia and other respiratory failures were linked to inhaling the powder from what I was told.
I've heard cornstarch is a good alternative (which I saw you said you used) but I haven't tried it.
It's not a prescription only product though so maybe your parents don't understand what you were using? I have a DCF (1st time parents, "previously not baby/kid friendly people" as they say) that had no idea there was non-prescription diaper rash ointment
