Maybelline Master Camo Color Correcting Pen- This is one shade from the collection of the Maybelline Master Camo Colour Correcting Pen\'s. The red shade conceals very dark circles, creating a flawless complexion! The pen comes with a precision applicator for pristine and targeted colour correction.. To use:. 1- Twist to release formula. 2- Apply to affected area with pen and blend. 3- Conceal with skin tone shade concealer. 4- Apply foundation over the top if desired