will a plaster draw a splinter out
J W(89). Try using an ice-cube to numb her finger, if she won't do that I was also told (but I've never tried) if you put a bit of onion inside a plaster/bandage then leave it on for a while it will draw the spelk out and into the onion.t is a white paste in a small pot, you only need a little plaster on top and then leave overnight. It will suck out the splinter as well as drawing out any infection in there from you poking around. The same stuff is useful for any minor cut that gets infected.