I will not re repurchasing this mascara. I don't know what it is about this formula but it irritated my eyes. On top of that, it dries to a brittle finish that if you don't remove it all the way at night it remains as little flakes that get into your eyes, I think that is why I reacted to it. I didn't think it was any better than drugstore mascaras therefore I do not recommend it.

The manager at the MAC counter recommended this mascara-I got it in the cute Archie collection packaging. The only pro I see is this mascara has good staying power and does not flake. I was looking for dramatic long, thick lashes and this mascara didn't deliver. I didn't like the large brush, I have tried large brushes in the past like Dior Show but for some reason found this one hard to use.I find I would get a black line close to my lash-almost like I applied black eyeliner-which I didn't! I did not get any thickness nor much length. I will be returning it!

After using Este Lauder More then Mascara for 20 years, I grew tired of it running in my eyes when my eyes "watered". I'm not sire about anyone else, but my eyes get watery in bright sun, wind, when I yawn, etc. More than mascara would run into my eyes and burn and make my eyes water even more until all of my mascara was wiped off. Enter MAC Optimum Opulash. It is fantastic. I had requested a waterproof mascara. This is what was recommended at the MAC store. It is a wonderful mascara. I have never seem any of the flaking mentioned in other reviews. And when my eyes water, it does not run or irritate my eyes. I would not consider this a waterproof mascara, but it certainly fulfilled my needs. I highly recommend this product.

This is a black mascara with a "dry" formula. It has a thick bristle wand that does not pick up too much product. It thickens lashes very well without any clumping, flaking or smudging. I took one lippie off for the fact that it does not lengthen as much as I would personally would like it to. Overall, I would repurchase. :)

Just bought this instead of my usual False Lashes by MAC.I have to say I love it, it doesn't make my already long lashes look spider-y and it doesn't clump. A nice, dark mascara that volumizes your lashes. It is a bit of a dry formula, like others say, and the brush is a little tricky at first. But an excellent mascara I promise you

Bought this one after I ran out of the usual Opulash. I find this one a bit dryer but also very nice and will definitely repurchase one of them.
Due to the noted dryness I noticed a bit more flaking. And I had a bit more trouble getting it off in the evening (but it worked fine with some micellar water or oil).
Regarding the colour I'm not sure whether it is my imagination playing tricks on me or whether it really is a tiny bit "blacker". I don't know. And it's not really important to me (I only bought this one because the regular one was out).
What I love about it is that I only need one or two coats to get real volume and colour and it doesn't clump rightaway.

Update:
I take off one lipstick since it began flaking annoyingly over the last days. I still find this a very nice mascara and it hasn't flaked for the first months as others I tried before did right from the beginning but in comparison to the usual Opulash it just ... flakes. More. Annoyingly more.

This was my staple mascara for a couple of years, but then I started noticing the clumps. But it is still a very good mascara. Washes off nicely.

I have to say I have tried so many mascaras and while they pretty much darken my lashes and volumize, many of them end up being smudged in a couple of hours. Welcome Opulash. I believe it is the kaolin clay that helps it from ending up under my eyes. It keeps my long lashes curled and soft without flakes. Mind you, it is a drier formulation and a volumizing one too, therefore it will dry out faster than other wet mascaras. If you have oilier lids, this is a great one for you. I have the blackest one and it isn't as dry as the original. Very good mascara.

I was fairly disappointed in this mascara. I recalled liking the original Opulash (though it wasn't one of my top favorites), so I figured this version had to be even better. Despite it being called "Optimum Black", I've used plenty of mascaras that give a blacker look. It can make quite fluttery, voluminous lashes, but I found it needed more coats than I expected to get my desired look. Also, this mascara becomes dry rather quickly, so that I needed to keep placing the wand back in the tube even just to do one eye. Flaking is an issue too, not only as the day wears on, but even when first applied. While I've definitely used worse mascaras, I expected to like this one much more than I actually did.

For someone who has endless problems finding a mascara that doesn't give me panda eyes after wearing it for a couple of hours, this mascara was brilliant. It gave great volume, lovely colour and extra curl without rubbing under my eyes (unusual for a non waterproof mascara). Unfortunately, this only seems to last for about 4 weeks after opening the product. After that it seems to dry out and flake really badly, even when only putting one layer on the top lashes. The original Opulash wasn't so bad for this but still definitely flaked. It's not the most expensive mascara, but still too pricey to repurchase every month.