1. Some chemical filters are known to cause red rashes, itchy skin, blisters, and red bumps for certain people.
2. They can penetrate your skin and circulate in your body, ending up in blood, urine, and even breast milk.
3. Laboratory studies indicate that some chemical sunscreens may mimic human hormones, which can lead to health problems in those who use it.
4. It’s bad for the environment. Common chemical sunscreens were shown to kill or bleach coral, even at low concentrations.
5. Many chemical sunscreens also contain other unwanted chemicals like artificial fragrances, chemical preservatives, and synthetic polymers.