I have used this concealer for years and years. Sometimes I am curious to try other products. Recently I bought the Bobbi Brown 2 part concealer kit which included pressed powder. I was so impressed with the coverage but within a day, a noticed a severe allergy to the Bobbi Brown. My lids were so swollen that I had trouble seeing and required a visit to the eye doctor. I couldn't leave the house for 5 days until the allergy subsided. That taught me a valuable lesson, stick with what you know works.With this Lancome concealer, I use No. 1 Porcelain. (I tried No. 2 but it was too tan for my very white skin) I use a cream first, then dab the circles under my eyes. Two coats work the best. Whatever I have left on my finger, I dab on uneven spots on my skin (I do not wear foundation) This concealer does not crease like most concealers. It stays all day. I cannot imagine there is a better product available (although the Bobbi Brown did a fantastic job but the chemicals proved toxic for me).
This is my first time using this particular product for undereye concealer by Lancome. I have used others and have to say I like this one a lot. It comes in a tube that allows you to apply as much as you need under your eyes. I found this product to be really nice and will continue to buy it as long as it's available.