I do not recommend or endorse this but having been a mechanic/trainer/bodger all my working life I have always used Superglue. Seriously! Air fix model glue before that. Stops bleeds in seconds and I was using it before the hospital in Brum started using plastic skin spray.
I went in once (more than once) for stitches and the doctor just laughed and said ‘well I suppose it keeps the bugs out’ covered in oil plasters just don’t stick.
BR
Colin (mind you I was daft back then 😂)
Super glue is sterile and was first used in Vietnam to seal wounds and stop infection which are specially nasty in that environment. I believe it was invented by the medical bods for that very purpose.