TheTOOLLAB 230 Flat Liner Eyeshadow & Eyeliner Brush

This ultra-fine flat brush is perfect for precise eyeliner, lash line, and tightline application. Its slender, dense bristles offer fine control and smooth pigment delivery, ideal for natural or dramatic looks. Loved for its ability to “fill the waterline without irritation,” it’s essential for sharp, detailed eye makeup. (aritaum.com)