What is amazing about this thing: the moment you tear the pouch open, a thin layer of iron powder inside reacts with the oxygen in the air and starts releasing a gentle, steady stream of warm steam — held between 40 and 42°C (110 F). The exact temperature shown to soften the hardened oil inside the glands.
You slip the loops over your ears, close your eyes, and breathe.
It stays warm for the full 20 minutes. Hands-free. Cordless. Silent. Light enough that you forget you're wearing it.
When you're done, you throw it away.
The next mask comes out of a fresh, sealed pouch.
No mold. No "what is that smell."
No microwave, no charger, no cord, no scuba-gear.
Just clean, warm, moist steam. Every single time.