Before I bought one I cut my head just a bit before going out one night, spent the next 2 hours with a tissue in my pocket to dab off blood. Made 3 or 4 trips to the restroom to wash off any residual blood that may have accumulated. It was such a hassle and just would not stop bleeding.
The next day a stiptic pencil was mine.
They work great and I will take a moment of sting over bleedy dome any day.