Okay I got this like a year ago when I saw the TV ad, it looked so enticing and I'm very easily swayed by advertsing. Thus I had to try it. Here's a breakdown, I opened it expecting something quite elegant, instead I got a creepy little flubber style ghostbuster HOT MESS of a green tube with a tacky sticker. On the plus side it's very portable and fits in a purse, even a small purse and is just a little shorter than the average mascara tube.
I put it on and instantly there was a tightening of the skin (not painful at all just like someone airbrushed the bottom of my eyelid). So after I did one eye, I left it a few seconds and I DID notice a difference from one eye to the other. It's a bit like a lip plumper in that sense, it gives imidiate gratification. So like a crazed woman I kept rolling rolling rolling rolling rolling rolling it on. IT'S SO DAMN COOLING, so the advertsing is not lying, it's very light and fresh feeling. However after I clearly over used it, it did leave a film under my eye lid which was gross. Please keep it mind I seriously did over use it for it to leave a (temporary) film, otherwise it's supremely light. It was like anything "If I use more I'll look more beautiful" but in fact it's like when you use too much blush or bronzer cuz you think it gives you more contoured cheek bones but actually you look like a clown. Don't worry about a gross film. Now, also like a lip plumper the effect is short lived. It does nothing for dark circles. I can't imagine how this would reduce puffiness other than the cooling, but then you can put two small spoons in the fridge and use them for a cooling effect, but this is more convinient. Now I never repurchsed this because essentially it does nothing, nothing permanant and certainly nothing that improves the under eye area over time. It's just a novelty cooling stick. Don't over use it, it doesn't harm/effect the eyes but it can make you blink a bit if you use too much. It seriously only cools so please don't expect a bargin drug store miracle in a funky tube. It's no touche eclat. It's just a novelty item, It smells pleasant and very light/fresh. It's just fun. It is also true that after the first few days you use it, the effect there after is not noticeable, I don't know if my eyes got acoustomed to it or if it really did stop working. Try it by all means, but I doubt it'll become anyone's holy grail.