A cranial helmet is a medical device designed to help reshape a baby's skull. It is often used for infants diagnosed with conditions like plagiocephaly, where one side of the head is flattened. The helmet gently applies pressure to specific areas of the skull, allowing for natural growth and correction over time. Typically made from lightweight materials, the helmet is custom-fitted to the child's head. Treatment usually begins when the baby is between 3 to 6 months old and can last several months, depending on the severity of the condition. Regular follow-ups with a healthcare provider are essential to monitor progress.