I came across this article on Facebook about a chemist’s advice to vapers to not dry-burn your coils.
Dry burning serves 2 purposes: test out a newly built coil and to clean it.
Some vapers advise to dry burn usually under 30 watts but Dr. Mirosław Dworniczak, a smoker turned vaper, advises otherwise.
Dry burning causes the oxidized coating on coils to peel off, which become microscopic particles. These particles are small enough to travel through the vapor making their way to your lungs.
These particles can cause allergies and in a worse case scenario become toxic.
Even though dry-burning causes more harm, the harm is still a very small threat compared to cigarette smoking.
What To Do Instead of Dry-Burning
The advice given in the story is to use non-contact coils, or spaced coils. It avoids heat spots and is easier to clean.
You can also use the newer ceramic heads that are gaining popularity, these are much safer to dry-burn compared to coils.