Consult your doctor or pharmacist. Eyes also can be damaged by overexposure. Other risks for outdoor enthusiasts are dehydration and heatstroke. Combat these with water. Drink fluids even when you don't feel thirsty.
Bugs are the bane of many outdoor adventures.
Not only are mosquitoes and ticks pests, but the creatures also can transmit disease. Mosquitoes are most active early in the morning and at dusk. But check with a doctor before applying any repellent on young children. Often a better way is to apply it to their clothing, not their skin. When outdoors, make frequent inspections for ticks, which can carry Lyme disease.