This screw brush firmly grips each individual eyebrow and eyelash, delicately shaping them. .With just the right amount of firmness, it beautifully shapes your eyebrows and eyelashes. .The dense bristles firmly grip each individual eyebrow and eyelash, giving your makeup a natural, delicate finish. .The brush is designed for easy application in finer areas, such as on the eyebrows, lower lashes, and tails. .Synthetic fiber (nylon) bristles. Dimensions: W38 x H199 x D31 (mm) [Usage Precautions] - Please keep your makeup tools clean. After use, gently rub the brush over tissue paper to remove any dirt. How to wash if dirt is noticeable: 1. Gently push out the dirt with lukewarm water mixed with a mild detergent (* 1), then rinse thoroughly with warm water. 2. Gently pat with a towel to remove excess water, then stand and dry in the shade (* 2). * 1 Do not use fabric softener or conditioner. * 2 Avoid direct sunlight or using a hair dryer. * Avoid wetting the metal fittings or wooden shaft. * Immediately after opening, there may be a lingering odor from the material. If you are concerned about the odor, dry in the shade in a well-ventilated area. If you experience any irritation or abnormalities, discontinue use.