Rule Of Thumb: Pick a base colour that's no more than two shades lighter or darker than your eyebrows.

Why It Works: The brow colour you're born with complements your skin tone perfectly. Stray too far away from it, and your complexion will appear washed out (dyeing your brows won't make a difference - the benchmark is always their natural colour). You can also use your true base shade as a guideline, but if you can't remember it exactly (or don't have pictures of yourself at age 12 handy), you're better off going by your eyebrows.

Also Keep In Mind: Weaving blonde highlights into your base colour enhances any complexion. 'Like self-tanner, golden tones illuminate your skin.' Says colourist, Jennifer J. Keep the streaks thin to ensure everything blends in well.