Cosima has a diamond-shaped face with high cheekbones and rather thin lips. Her nose has an upward turn and a thin bridge. Cosima often has bags under her eyes from lack of sleep. She has very pale eyebrows, and a small scar that nicks the right one. Her eyes are amber, and are slightly downturned and deep-set. Cosima’s hair is a pale ash-blonde, and reaches her mid-back. She has layers and long bangs swept to the left side of her face, and her hair has a slight wave. She has a large cowlick over her right temple that causes most of her hair to sweep to the left. Cosima generally wears her hair down, or in a loose bun covered by a slate blue bandana when she works.