The key to being a successful makeup artist is being able to identify someone's undertones and know how to manipulate the color wheel to get rid of unwanted color.
Opposite colors cancel each other out.
Redness or zits? Add a little green pigment to your concealer or foundation.
Blue veins? Add some orange/light brown to your concealer or foundation.
Dark bags under your eyes? Add some green/yellow pigment to your concealer or foundation.
These high quality, gluten-free, mineral pigments are perfect to use.