1, the elderly: because buckwheat is cold and pillows are cold, the elderly are weak. In addition, the head itself is a fragile place, and cold invasion can easily cause headaches and other symptoms, so it is not recommended for the elderly to use this cold pillow to avoid discomfort to the body.

2. Infants and young children: Infants and young children are not suitable for cold pillows. First, their physical fitness is not as good as that of adults, and their immunity is not high. Second, because buckwheat pillows are made of buckwheat, and buckwheat granules are relatively large and hard, and the skin of infants is relatively delicate, so infants are not suitable for use.