Yes, you're absolutely right Sqad. I do recall zinc paste and ichthammol bandage BP and also Unguentum Ichthammolis, in the days when pharmaceutical Latin was the norm ( I still tease the medical students I sometimes teach by asking them if they have any idea what Mist. Belladonna or Pulv. Boric Acid are). I think it was marketed as Icthaband and was still in the BP in the early nineties. As you say, it was messy stuff.
Ichthammol ointment or paste is still available in the UK but it's more popular in the states where Walmart etc sell it under the equivalent of our GSL for removing splinters, ingrowing toenail treatment, insect stings and as a remedy for contact with poison ivy. It's sometimes sold as "Black Drawing Salve" too. Bearing in mind it contains wool fat and yellow soft paraffin, the possibility of an allergic reaction must be taken into account nowadays. This was virtually unknown years ago.