Polybutylene terephthalate

I'm like, this is cool, but it doesn't look – why does my lash extensions look different? So then I started studying what lash extensions were made of.

And they're made of PBT, which is a form of plastic.

It's synthetic silk.

So then I was like, wait a minute.

Right.

Now, PBT polybutylene terephthalate has great dimensional stability and very low moisture absorption, making it highly resistant to dendrite growth.

Okay, so just use PBT.

Well, standard PBT hasn't traditionally matched the mechanical toughness of polyamides.

Ah, I see.

You either get a tough connector that might short circuit or a safe connector that might crack.

Exactly.

But Invalier engineered a solution that eliminates the compromise entirely.