No matter how little makeup you put on, concealer is a staple in all kits. It’s the one thing I could slap on before heading out to the grocery just so I look somewhat human. This means applying it as thinly as possible so it looks very natural.
The key in applying concealer is using your fingers. The warmth of your skin helps the product thin out and allows you to blend it properly. I also like using an eyeshadow blending brush such as the MAC 224 to evenly apply the cream or liquid, and then I gently press the product into the skin with my ring finger.
The step is to set your concealer with the right kind of powder. Powders such as those that give a lot of coverage tend to have bigger particles and weigh heavier on the skin. This makes the product sink into fine lines and wrinkles (especially for those who have deep set eyes and mature skin). The best powders to use are those with very fine granules (fine milled), and those that give zero to very minimal coverage.
I like to use a brush instead of a powder puff when setting my concealer because the latter deposits more product onto the skin. The less product under the eye, the less chances of it caking.