Make the baby wear loose cotton clothing<br> Keep the baby open for few minutes during the day<br> Apply rash cream

Hey new mom congratulation. heat rash in babies occurs when excessive sweating clogs sweat glands, trapping perspiration beneath the skin and resulting in telltale red bumps or blisters. It's most common in the summer, when weather is hot and humid. Tight or too-warm clothing can make it worse.. Also treating heat rashes in babies can be done in this manner Cool the skin. You can cool the skin by removing extra layers of clothing or by moving to a cooled indoor space. ... Apply water. Dont apply any lotion if the rashes are red.