Concealer brushes can and should do the following: apply tiny amounts of products to conceal minute blemishes, cover and even out larger spots and discolored areas (including dark under-eye circles) and finally, buff concealer into the questionably looking area for a flawless look. Why, then, the most common concealer brushes are these very small flat and paddle shaped brushes made of stiff synthetic fibers that don't move well, don't buff and generally tend to get caked up and useless before one finishes the task?
Still, there are some extraordinary concealer brushes that perform well. Here are my six ones:
Kevyn Aucoin- this brush has the smallest head and does the most precise and detailed work. Depending on your concealer, you might need to follow up with a buffing brush to even out things.
Hakuhodo G538- another small brush for detailed work. Flexible and versatile.
Le Metier de Beaute- probably the best concealer brush you can find.
Hakuhodo G542- the closest thing to the LMdB perfection.
Trish McEvoy The Point- the little brush that could. Buffs and blend concealer and foundation of any formula and consistency, reaches small crevices and gives the best finish.
Dermablend- small, pointy and helpful with thick formulas.
Bobbi Brown Touch-Up- a serious multitasker, soft and dense that applies and buffs concealer as well as cream eye shadow and does minor foundation corrections.
An honorable mention goes to MAC 217, a classic eye blending brush that buffs well, as long as your specimen isn't too scratchy, and to Laura Mercier Eye Finishing brush that's even softer and kinder under the eyes.