For a primary, more simple contour effect, two eyeshadow hues are sufficient to create a contoured aesthetic.
However, to achieve a more elaborate, sculptured effect, you will need at least three eyeshadow hues.
Start by choosing eyeshadows that are two to three shades deeper than your natural skin tone for sculpting. Use a contouring brush or beauty blender and tap the darker eyeshadow shade underneath your cheekbones, along your hairline, and underneath your chin, using circular motions.
Blend out the eyeshadow until it looks natural, and then, using a highlighting brush, pat the lighter eyeshadow shade along your brow bone, cupid’s bow, and on top of your cheekbones.
Deeper eyeshadow shades help sculpt and structure your face, while the lighter shades create the illusion of shadows, highlighting facial features.
When contouring with eyeshadow, take care not to overdo it. Contour shouldn’t be noticeable, and the aim is to accentuate your best features, avoiding an overly sharp and harsh finish.
You should also pick appropriate tools to apply the eyeshadow.
For powder eyeshadow, a thick eyeshadow blending brush works well, while when applying a cream or liquid eyeshadow to contour, consider using a damp beauty blender or foundation brush.