I got a free sample of this mask that I took with me on a business trip. The hotel bathroom mirror was ringed with the kind of fluorescent light that shows every clogged pore and wayward eyebrow hair. I have oily, acne prone skin, so of course the light illuminated it in all its glory. Immediately after rinsing this mask off, almost all of the clogged pores were gone! My skin was smooth, pores refined, etc. It was really noticeable. And my skin felt refreshed and balanced for the next couple of days. Now, it's possible that other masks would have the same effect in the freaky fluorescent light — I haven't tried other masks with light like that, so I don't know for sure. But I doubt it. Also — fair warning — this mask does sting, and my skin is NOT sensitive. It's more of a slow burn than an immediate ouch. But for me it was bearable and worth it. Despite the burn, my skin emerged calm and happy. Now I use it 2-3 times a week and it helps to keep my skin clear.