Baby yarn is specifically designed for a baby’s sensitive skin. It is hypoallergenic, extra soft, and not itchy, like some regular yarns. The most significant difference is that baby yarns are fire retardant. Regular yarns and primarily acrylics are highly flammable, making them unsafe for babies. If you’re making a baby blanket, you’ll want to make sure that you use a baby yarn so your baby is safe and more comfortable.