Though you should avoid using sunscreen on infants, the American Academy of Pediatrics says that it's fine, and in fact advisable, to use sunscreen on babies who are at least 6 months old. Some types of sunscreen work better than others for such young children, and you should be on the lookout for skin irritation and other signs of allergic reaction to the lotion.
Use
Applying suntan lotion to babies who are 6 months old and older keeps them from developing a sunburn and allows you a bit more freedom when it comes to outings in direct sunlight. You'll want to apply it generously at least 30 minutes before going outside. Though the sunscreen will protect the child to a point, the American Academy of Pediatrics also suggests that you dress your baby in loose, lightweight clothes with long sleeves, as well as a hat and a pair of UV-rated sunglasses to protect delicate eyes. Choose a waterproof sunblock if you're swimming.
Warning
Some children are quite sensitive to the chemicals in sunscreen, and since babies' skin is thin they tend to absorb more of the product than adults. If it's the first time you're using sunscreen on your baby or you're tying a new brand, it's smart to test the product first. Dab a small amount of sunscreen on your child's skin and wait 15 to 20 minutes to make sure she has no reaction to it before applying it to her whole body. If she develops a rash or discolored patch, discontinue use.
Types
Dr. Sears' website suggests selecting a milky, lotion-based sunscreen as opposed to a clear, alcohol-based product. Alcohol-based products can burn or irritate the child's sensitive skin, while the lotions are generally mild enough for young children. You should also purchase a separate sunscreen that contains zinc oxide for the baby's sensitive ears, nose and cheeks because those lotions provide extra protection.
SPF
When it comes to SPF, higher isn't necessarily better. Because young children can be so sensitive, it's best to stick with a suntan lotion that has an SPF of 15 to 30. Though higher-SPF formulas offer greater protection from UVB rays, they can also irritate the baby's skin.
UV Protection
Make sure to purchase a broad-spectrum sunscreen because these lotions are formulated to shield you from both UVA and UVB rays. You may also want to look for a sunscreen that uses the UVA star-rating system on the packaging. A sunblock that is rated four stars provides the most protection against UVA rays.
