Does it work? Yes.
Are there many concealers out there already? Yes.
How is it any different? Can't really tell.
The only thing is that it should be slightly more luminous, thus reflect the light, like the Embelisseur de Teint by YSL.
It offers light to medium coverage so if you need something thicker don't buy it but if you are looking for something ligh, then this is it. I like that it's not tested on animals.
"Stays put for up to 5 hrs" - which is not a lot

Didn't notice much of a difference. The size is convenient: easy to carry around in your purse

Good for a quick fix but not as effective as I would have liked. Dark circles were still visible after application. Consistence of product is good and applies smoothly without leaving powder residue.

Pas mon correcteur préféré! C'est vrai que le fini n'est ne fait pas gras, ce qui est agréable, mais le produit ne correspond pas vraiment à mon teint pâle...

This concealer only comes in two shades. I received wow which was unforunately much too light for skintone. In terms of formula there was good coverage, dries to a matte satin like feel and blends nicely. I would pass up on the shade wow but I if I found a shade that worked with my skintone I feel that would love it.

Goes on easy, a little goes a long way.

"Wow" might not be my shade as I didn't see a big difference under my eyes. I tried someone's pizazz and the color was better for my complexion. Pretty good job covering my dark circles. I would use this product.

The colour (Wow) was perfect for my skin tone and melted into my skin but did look a bit shiny after application. Would like it under my foundation or as a highlighter.

Colour I received was light for my dark skin tone. I applied and really blended to to have it natch my skin tone. Slightly chalky looking. That could be corrected with some powder placed over it.

I like that it comes in a small pen format that is easy to throw into your purse. You do have to be careful twisting the pen to get the cream to come out as it's a little over zealous the first time. Not sure if the Pizazz colour was the right tint for me, one slightly darker would be better. But will definitely be good to cover those spontaneous zits that pop up