Light + Heat + Vibration= Tanda ZAP!
I used on some pretty tough zits, it eased them into oblivion.
Not immediate disappearance, but a gradual fade. No scabs, no spots.
Also tried on some under-the-skin (yet to erupt) zits--totally stopped them from busting out!
Easy to use while doing something else (watching TV, reading, etc).
Portable and looks so space-age.