sorry about the dirty hands, just came from work and this stuff is impossible to get off. But does this blister look infected? 3-4 weeks old from working on car.
My son had a laparoscopic surgery when he was an infant. Every now and then, 10 years later, the tiny scar fills up and gets a black head. Got this cute little thing out of it just now! (No children were harmed during the squeezing)