First, find your shade match for your full face. Swatch a few shades of the STUDIO FIX EVERY-WEAR ALL-OVER FACE PEN on your face, let it set and pick the colour that blends well into your skin tone. The best foundation shade match here is NC50. Use 1 full click to use as a foundation, or half a click for areas you want more coverage to use as a concealer. For stubborn blemishes, use a small amount of formula, tap it in and leave to set. If you require more, simply repeat until desired coverage is achieved.