Silk ones too.
Make linen bandages heal up to 10 points, wool up to 20 points and silk up to 30. After it heals for 10 points it becomes a bloody rag and stops working (like bloated leeches). This would give newbies an earlier form of bandages and a continued use of linen. Or maybe 10, 50 and 100 if linen is too common vs silk and wool.