Andat-home plasma pen treatmentsfall squarely in the latter camp.

Those who receive full-face treatments are left looking something like pointillist paintings.

(You’ll see what we mean if you search#fibroblastplasmaor#plasmapenon TikTok.)

Patient being treated with fibroblast plasma pen

Getty Images

What Is Plasma?

Sometimes called the fourth state of matter, plasma forms when a gas is super-heated.

The process is then repeated over the entirety of the desired treatment area.

How Do Plasma Pens Work?

Cosmetic chemistGinger Kingnotes that that same logic can be applied tomicroneedlingdevices.

What Are the Risks of Using a Plasma Pen?

That said, the long-term results may be less desirable.

Let’s say you have a raw steak and you cook it.

You’re denaturing the proteins of the steak, so you’re fundamentally changing it.

The cooked steak doesn’t look anything like the raw steak and it doesn’t move the same way.

It has a leathery quality; it doesn’t have the same suppleness," she says.

The treatment also poses a risk of creating scars and pitting, says Dr. Devgan.

And people of color in particular are susceptible to treated areas becominghyperpigmented.

According to Dr. Devgan, these side effects “can happen after [just] one session.”

(Allurereached out to the company, but did not receive a response.)

Bottom line: The risks associated with plasma pens aren’t worth the (short-term) reward.

Read more about TikTok beauty trends:

Now watch the history of plastic surgery: