What is a good way to put on under eye concealer?

I have this concealer.


http://www.walgreens.com/store/pickcolor鈥?/a>





What is a good way to apply it? Because it looks good in pictures, but when I look in the mirror, it looks bad.What is a good way to put on under eye concealer?
dab under eye and blend with finger!!What is a good way to put on under eye concealer?
i sell makeup and it is VERY important that anytime your messing around your eyes you use your ring finger (4th) on either hand... the skin around your eyes is the most thinest skin on your body so be sure to be gentle to prevent wrinkles in the future. also be sure to blend well.
blend it with a makeup brush


it gets in all the lines in your skin for a more smoother look

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