Parents and caregivers know that applying a safe, effective sunscreen to children is one key to protecting them from sun damage. Sunscreen should never be your child’s first line of defense against the sun, of course, and the reality is that some products may actually do more harm than good.

Here’s what to avoid:

Here’s our list of the worst sunscreens for kids.

They each have at least three strikes against them: sky-high SPFs and potentially harmful ingredients oxybenzone and retinyl palmitate. Two have another strike against them: They’re aerosol sprays that can harm sensitive young lungs. Convenient? Yes. Good for kids? Absolutely not.

Keep these 11 sunscreens out of your shopping cart:

Dishonorable mentions:

Both Neutrogena’s Pure & Free Baby sunscreen and the CVS knock-off claim to be “hypoallergenic” but actually include a potent skin allergen: the preservative methylisothiazolinone.

Visit the EWG Guide to Sunscreens to find the best sunscreens for kids.

Remember: it takes only a few blistering sunburns during childhood to double a person’s lifetime chance of developing melanoma, the most serious form of skin cancer. The best defenses against getting too much harmful UV radiation are protective clothing, shade and timing. Practice these sun safety habits to keep your children safe in the sun:

Want more tips? Visit the Healthy Child Healthy World 2015 Sun Safety Guide for Children.