The phrase "concealer application" refers to the act of applying a type of makeup called concealer, which is used to hide blemishes, dark circles, or other imperfections on the skin. Full definition
In order to get a flawless concealer application, it's important to make sure your skin is hydrated, not flaky, before you apply concealer. (facetocurls.com)
+ I used to think that the only way to get a flawless under eye concealer application is using a damp sponge. (justalittleblush.com)
For concealer application, sweep brush tip to pick up formula, then dab onto under - eye circles or blemishes. (100percentpure.com)