Vent Hole(Not a missing bristle): The mini hair brush features a vent hole in the midst of the bristles, which provides effective ventilation. The air hole design is conducive to superior air circulation when combing your hair, helping prevent irritation to the scalp, regardless of whether you press up and down or move the brush from left and right | Mini Travel Hair Brush: This travel-sized brush is compact, portable and lightweight, meaning it fits comfortably in your handbag during vacations or business trips, convenient for you to carry around and use on the go | Multifunction Design: This excellent air cushion comb does more than just brush your hair. It also helps improve blood circulation in your scalp. Through gentle, soothing massage, the mini brush stimulates blood flow on the surface of the scalp, increasing scalp metabolism, and helping hair grow healthier in turn. Moreover, the gentle head massage can also help relieve stress and reduce tension | Hair Care: These hairbrushes are highly effective for professional hair care. Thanks to flexible bristles and a smooth, spherical top that’s soft to the touch, the small size brush will not generate static electricity. Thus, the detangler brush can gently detangle hair and reduce breakage and damage | Suitable for all hair types: The tangle-free brush features a very large contact area with the head when used, making it compatible with various head shapes and hair types. The brush can be used for straight, wavy, curly, short, long, dry, and wet hair. Thus, it’s great for detangling and adding shine to your hair while smoothing frizz