You should bust the blister so whatever is inside of it will come out before it gets infected.
heroin
Well I take my blisters of by poking it with a needle or something sharp and then just let it pop. Beleive me it works and it doesn't hurt.
A wart or blister.
To pop a blister without using a needle, you can gently clean the blister with soap and water, then apply a sterile bandage to protect it. Over time, the blister may naturally break on its own as the fluid inside is reabsorbed by the body. It's important to avoid forcefully popping the blister to prevent infection.
A single red blister on your left arm that does not hurt could be nothing. It just be where you rubbed against something.
Oragel or some type of Vaseline works best.
Yes that is an oral version of a scab and it will disappear in a few days.
The clear fluid inside a blister is called serum. Serum is a component of blood that leaks into the blister cavity due to damage to the skin's underlying layers. It helps protect the affected area while new skin cells form underneath.
A blister on the labia
In the context of blister copper, "blister" refers to the appearance of the copper after it is extracted and processed. Blister copper contains gas bubbles that form during the smelting process, giving it a blistered or bubbly appearance.
Your blister pops...
Blister Agents