From shagging?I had a scab on my knee once that looked like that .
Carpet burn.....From shagging?
Don't want dab on top of that unless your selling it. Might cause problems if it bonding plaster on the wall looks like it..Defo dab a board then skim with unifinish renovating plaster.
Don't want dab on top of that unless your selling it. Might cause problems if it bonding plaster on the wall looks like it..