I think the key to under eye concealing is more in camoflauging rather than covering them up. Our concealer has Silica and other light reflecting minerals to help optically diffuse those dreaded under circles.
Lemon concealer will be good if you have a pinker skintone, as the pink in your skin will make your under eye circles more bluish purple and the yellow will neutralize that.
A full size is a 2 gram container, the same container that the deluxe lip samples come in, and a sample is a few drops in a pod. Not much but enough to test it out a few times.
Ingredients: Avocado Butter, Silica, Zinc Oxide, Titanium Dioxide, Iron Oxides and Allantoin.