MUA Eye Define Felt Liner – Flawless Cat Eye with Every Swipe: Marker Style with Precision Felt Tip. This eyeliner comes in a marker-style format that allows for easy and quick application, featuring a special precision tip ideal for creating perfect cat eye looks. Suitable for beginners and pros alike. Intense Black Formula That Won’t Smudge or Crack. It offers a deep black finish that won’t smudge, won’t crack, and stays in place all day. A makeup bag essential for sharp, bold lines!