Flat and elongated shape with narrow synthetic lint.The lint length: 5 mm with a cap. Synthetic lint is of high quality, durable, and resilient, preventing loosening. Brush is used for applying: base - gel - top coat. Work features Recommendations for Use: ● Use a special brush cleaner, cleanser, alcohol, or disinfectant for cleaning the brush. ● Avoid dipping the lint into any cleaning solution as it deteriorates the quality and condition of the lint over time. ● Protect brushes from direct sunlight and LED lamp rays. ● Avoid applying excessive pressure on the brush, do not wipe lint with a cloth, just dab gently. ● Do not trim the lint "to the root"; if necessary, leave a few millimeters near the base. ● Carefully place the brush into its cap to avoid bending. ● Do not leave brushes wet to prevent lint deformation.