If your foundation is looking too yellow, mix the blue mixing pigment with your foundation to lighten and colour correct to a cool undertone. How To Use: Apply a small amount of your foundation on your cheek and compare to your complexion, if you find it needs to be more yellow, take a small amount of the yellow mixing pigment and your foundation and mix to create your perfect second skin finish. If the undertone matches but the shade is too dark, mix the white mixing pigment to make it lighter; or if it is too light, mix the red mixing pigment to customise your foundation to be warmer and deeper. Don’t forget you can use multiple mixing pigments to colour correct and customise your dream foundation match. Say goodbye to the days of buying endless foundation shades and hoping they match! Vegan & Cruelty Free.