Which do you apply first, your concealer or foundation? It seems like this questions is somewhat of a debate because I’ve read a little of both on some of the most popular beauty blogs. I’ve always applied my foundation first, otherwise it seems redundant to apply concealer only to have the coverage wiped away with the application of your foundation, so in this case, as long as your concealer is blending in well and giving you the coverage you want, do whichever works for you! a different job. A peach-toned concealer is best for under-eye circles because it cancels out blue shadows.