My skin is Mac NC15-NC20, and  IOPE XP in C21 looks almost perfect on me, a tad bit lighter. It will be a perfect match for an NC15 skin color.

This cushion is very buildable, provides good cover, although larger pimples should be covered with a concealer.

Provides a dewy look, feels really hydrating on my dry-combo skin. Stays the whole day on my face, but melts easily when it is hot outside (above 22 degrees celcius).