John Rumm wrote:
Not really restricted to DIY but...

When I was a kid we used to buy a tub of gloop called Lion Ointment[1]
for dressing wounds. It was particularly good for dealing with dirty
wounds, or ones with fragments in like splinters, or gravel acquired
while aquaplaning off one's bike across a new road surface etc. Slap
some on, dress it, and a day or so later it would have drawn anything
that should not have been in there out and into the dressing. It was
very effective on septic wounds as well. Alas they no longer seem to
make it, so what do people use these days as a drawing agent on a wound?

[1] A concoction of petroleum jelly, beeswax and various other things
made by Burgess IIRC. It was golden in colour, a stiff "set honey" like
viscosity, and with a distinctive aroma. We originally found out about
it following a recommendation from a chap who had served in the trenches
in WWI and found it ideal for drawing shrapnel fragments from wounds.

We followed a fairly strict sequence.

First, wash everything in sopay water to get rid of particles of dirt.
Remove splinters.

Then douse affected area in (depending which parents house the accident
occured) Dettol, TCP, Iodine or Hydrogen peroxide.

Fold any loose flaps of skin back over the gaping holes.

use sticking plaster (small stuff) or cotton wool pads, plus bandage
(big holes) to staunch bleeding.

If it looked bad enough to scar, get stitched at doctors. If it was
something filthy you got cut on, get tetanus booster.

I don;t do any different toady, except micro pore tape is useful to do
rapid stitching, and, doused with Cyanoacrylate glue, makes a pretty
decent temporary skin.