Here's the first rule of concealer: Apply under-eye concealer before foundation and blemish concealer after foundation. The starting point for your concealer routine is the innermost corner of the eye. If you're using a corrector, apply it now, with a brush or your ring finger. Then, again with a brush or your ring finger, apply thin layers of concealer outward. You don't want to go past the middle of your eye -- that inner corner is where the most discoloration is, and concealer that extends too far out can look unnatural.
After you've applied foundation, which we'll discuss on the next page, it's time to make those blemishes disappear. Using the concealer that matches your foundation, cover up any problem areas and blend well.