For eyeshadow application & blending The Pro Brush allows for perfect eyeshadow application and blends these seamlessly. Brush No. 9: The bristles are made of pony hair that is neither too hard nor too soft for perfect eyeshadow application. Brush No. 27: The round brush head with soft bristles that are perfect for blending eyeshadows. Care: It is recommended to clean the brushes on a regular basis to ensure their durability. Clean the bristles using a mild soap and water, rinse thoroughly and place on a towel to dry. Note: Japanese pony hairs used for the brushes are obtained through shearing or brushing the animal#s mane.