450,000 soft bristles are densely aligned on the brush head for stable pressure for minimal irritation . Brush cleansing will remove all dirt and dead skin cells and boost your circulation to increase blood flow to the cells to restore skin's vitality . HOW TO USE: Wet the brush with water and add a small amount of your facial cleanser. Gently massage your face in a circular motion. Once cleanser has been thoroughly massaged on the face, wash off skin with water or a warm, moist towel. After use, be sure to rinse the pore cleansing brush and squeeze out the excess water. Sensitive skin 2 times a week/normal skin 3 times a week . hanging the brush in the shade,and let it dry naturally after used