Bone wax

Bone wax is a waxy substance used to help mechanically control bleeding from bone surfaces during surgical procedures.

It is generally made of beeswax^[1] with a softening agent such as paraffin or petroleum jelly and is smeared across the bleeding edge of the bone, blocking the holes and causing immediate bone hemostasis through a tamponade effect. Bone wax is most commonly supplied in sterile sticks, and usually requires softening before it can be applied.