Heat rash in babies can develop when their delicate skin overheats or becomes too moist. The rash often looks like small pink spots or blisters and can make babies fussy or uncomfortable. Keeping the baby in a cool, well-ventilated space is the best remedy for heat rash in babies. Avoid thick clothing and use lightweight, breathable fabrics. A cool bath can help calm irritated skin. In most cases, heat rash in babies clears up naturally, but if it persists or gets worse, a pediatrician should be consulted. With gentle care, your baby’s skin will heal quickly and stay rash-free.