Opinions differ as whether to apply concealer and coverup before or after foundation. You may want to try both methods to see what works best for you. Concealers come in stick, wand, and tube forms. Getting full coverage from your concealer may take several steps
Gently dab a tiny amount of concealer onto any facial blemishes. This is the best method for concealing pimples or other blemishes or flaws.
Let dry completely. Dab more concealer onto blemishes if needed.
Cover with loose powder.
Gently dab a small amount of concealer to the under eye area if needed.
Carefully smooth inward with your ring finger to avoid stress to the delicate eye tissue.