Here's something odd about the LED mask category: nearly every device stops at the jawline. Meanwhile the neck and décolleté are where most people first notice their skin changing.
Why masks stop at the jaw
Manufacturing, mostly. A face mask is one moulded shell with holes for the eyes and mouth. The neck is a different shape, it moves when you swallow, and sizes vary far more between people. Covering it means either a second panel or a flexible wrap — both add cost.
So most brands leave it out and don't mention it.
Why the neck gets skipped in routines too
The neck has thinner skin and fewer oil glands than the face. It also gets a fraction of the attention: people apply serum carefully to the face and then stop at the chin. Combine thinner skin with less care and you get the common situation where someone's face and neck look like they belong to different decades.
What to look for
Separate neck attachment vs one big panel. A detachable attachment lets you use the face alone on days you're short on time. A single fixed panel is simpler but all-or-nothing.
Where the LEDs actually sit. Some "neck coverage" masks extend the shell downward without adding many diodes to that section. Check the LED count and how it's distributed, not just the shape.
Whether it stays put. The neck moves. If the attachment only hangs there, you'll spend the session adjusting it.
Cordless or not. More relevant with neck coverage than without — you're wearing more hardware for the same ten to twenty minutes, and a cable makes it worse.
Using it on the neck
Same rules as the face. Clean, dry, bare skin — no serum underneath, it blocks the light. Ten to twenty minutes, three to five times a week. Then moisturise afterwards, neck included.
If you're new to it, start with the face alone for a couple of weeks, then add the neck. Easier to stay consistent when you're not changing everything at once.
Where ours sits
The Fask LED Mask includes a detachable neck attachment, with 270 LEDs across both panels, and runs cordless. It's $74.99 with a 7-day money-back guarantee.
That said — if a mask you already own does the face well, adding a device for the neck alone probably isn't worth it. Consistency with what you have beats a second gadget.
General information, not medical advice. Speak to a healthcare professional first if you take photosensitising medication, have a light-sensitive condition, or are pregnant.