Studies have looked at whether a common sunscreen chemical called oxybenzone affects people’s ability to get pregnant or have healthy babies, and so far, there’s no clear link — it doesn’t seem to hurt fertility in men or women.

Some studies suggest that teens who have more of a common sunscreen chemical (oxybenzone) in their bodies may have lower testosterone levels, but other studies didn’t find any link to fertility problems—so it’s not clear if this really matters yet.

Using sunscreen with oxybenzone doesn't reliably mess with your thyroid hormones—some studies say it might lower them a bit, but most say it doesn't do anything noticeable, even in pregnant women.

Most studies say that using sunscreen with oxybenzone while pregnant doesn’t seem to harm the baby’s growth, brain development, or when they hit puberty—but one study found baby boys might be a bit heavier, and another linked it to a rare bowel condition.