Show: Cushnie et Ochs
Show: Michael Costello
The colours: Essie Tuck It In My Tux and Penny Talk
The technique: Dip a fan brush in Penny Talk, remove post of the polish, then lightly swipe across the tip of the nail horizontally.
Show: Alexander Wang
The colours: Essie Sand Tropez and Sugar Daddy
The technique: Layer one coat of each polish, then finish with a matte top coat to get the "concrete" look.