This is the #1 product in my makeup arsenal. It is not only the best under eye concealer, but the perfect concealer to create a flawless base for foundation as it conceals even the most severe rosacea flares.
It only takes a drop or two to conceal using a concealer brush. A finger pat works just as well. It's waterproof and stays in place until you remove. Works best if you do not over apply and if you take a second or two to put drops in palm first and warm by blending gently with your finger, then brush on or dab on.
A photo tells the story best. After photo: products used, Bye Bye undereye illumination (fair) followed by Celebration Foundation Illumination powder formula (fair).