Baby's First Pillow is the safest, most ideal support for babies to sleep on. Inspired by traditional Ayurvedic remedy, this mustard-filled cushion helps to dramatically reduce head pressure, aiding in the prevention and correction of flat-head syndrome.Filled with selective 'tiny-sized' mustard seeds for optimum customized support and premium quality aromatic Lavender flowers for deep sound sleep, our specially engineered, soft cotton pillows are irreplaceable. A baby's bones, including the skullcap (top part of head), are soft and flexible and not fused together. It takes approximately 12 to 18 months to strengthen and fuse into one. During this time, to prevent and treat flat-head caused by constant pressing against bedding, to help with irregular head forms caused by childbirth and to provide customized sleep support, the Baby's First Pillow is invaluable.