All about Brows

To darken light brows: If you want to have more defined, darker brows, you can brush them up and out with a clean spooly, then use a pointed taupe brow pencil (for fair brows) or a brown one (for darker brows) to draw tiny, feathery strokes on the skin beneath the hairs. Finally, go over brows with an angled brow brush, blending and smoothing out colour across the area.

The right brow shade for your skin and hair colour: 
Brunettes: Your brow should be 2 shades lighter than your hair.

Blond or Red hair: Your brown should be one shade darker than your hair

To Lighten brows: Use an at-home colour kit that is lighter than your hair; you will get a more natural looking result than bleaching. Just don't forget to protect the skin around so it wont get stained. you can dab aquaphor around the brows first to protect the skin.