Keep your baby in the shade as much as you can. Their skin is thinner and more sensitive. Cover them up with clothes and a hat, limit their time in the sun (especially between 10 a.m. and 2 p.m., when the sun is strongest), don’t let them get overheated, and get them out of the sun right away if they show any signs of sunburn or dehydration, including fussiness, redness, and excessive crying.