14 Sunscreens You Should Never Buy

May. 27, 2017 08:22AM EST Popular

By Monica Amarelo and Paul Pestano

Sun safety is a crucial part of any outdoor activity for kids, and sunscreen can help protect children's skin from harmful ultraviolet rays. Kids often get sunburned when they're outside unprotected for longer than expected. Parents need to plan ahead and keep sun protection handy in their cars or bags.

Just a few serious sunburns can increase a kid's risk of skin cancer later in life. They don't need to be at the pool, beach or lake to get too much sun. Their skin needs protection from the sun's harmful rays whenever UV peaks.

A baby's best defense against sunburn is to avoid the sun or stay in the shade. For babies younger than six months old, physical barriers are best—clothing, hats, pop-up tents and umbrellas.

For children older than six months, an effective sunscreen, applied liberally and frequently, is an important part of a parent's sun safety toolkit.

By and large, the sunscreens that perform well in Environmental Working Group's (EWG) 2017 Guide to Sunscreens are mineral-based products with zinc oxide and/or titanium dioxide as the active ingredients. These products protect against both UVA and UVB rays, but watch out for products that have low percentages of these active ingredients, as they may contain other ingredients that boost the SPF on the label without actually protecting from other skin damages.

Parents need to be mindful that certain ingredients in sunscreen could pose safety concerns, including retinyl palmitate, a form of vitamin A that is linked to sun sensitivity, and oxybenzone, a hormone disrupter.

Steer clear of sunscreen products with an SPF more than 50. Use sunscreen with at least SPF 15 and broad spectrum protection when your child goes outside. For the best protection, apply sunscreen generously 15 minutes before going outdoors and reapply at least every two hours. You should reapply sunscreen after sweating, getting wet or towel drying. Don't forget to protect ears, noses, lips and the tops of feet.

Last but not least, avoid aerosol sprays. They provide inadequate skin coverage because they don't provide a thick and uniform coating on the skin. And kids can inhale spray products.

Choosing the right sunscreen from the hundreds of products lining store shelves can be daunting. EWG researchers came up with a list of 14 worst-scoring sunscreens for kids: