If you choose to use sunscreen, opt for mineral-based versions with fewer additives. However, some pediatricians and dermatologists advise that sunscreen may not be strictly necessary for very young children, and that physical shade is safer. If your child has sensitive or eczema-prone skin, watch for reactions; watery eyes or rashes after sunscreen application may indicate a sensitivity to a specific ingredient, in which case you should switch brands or consult your pediatrician.