Combination brows is a combination of two forms of semi-permanent techniques: microblading and powder brows (shading). Microblading hair-strokes are placed with a manual tool around the border of the brow to give the brow a natural look. The powder effect is applied to the body of the brow using a permanent makeup device to give the brow its fullness.
Combination Brows are great for clients with normal to moderately oily skin. So if your skin is too oily for microblading alone, combo brows might be a viable alternative. For someone with very sparse brows, the shading can give the brow more body, while the hair-strokes keep it looking natural.