Whether you are shopping for yourself, a loved one or a secret Santa, hand sanitizers could perhaps be in the mix. Not particularly for a gift, but maybe for yourself or your family. Not all hand sanitizers are safe, though, according to the U.S. Food and Drug Administration (FDA).

The FDA has issued a list of 215 hand sanitizers that are not safe for humans, mostly if they are ingested. The FDA began listing toxic hand sanitizers in June, starting with a list of nine—all made and distributed from Mexico. The FDA’s list then grew from nine to 14, then to 100, then 150 and now 215.

What’s wrong with the sanitizers in this list? Most on this list contain methanol (wood alcohol), which can seep through the skin and lead to toxicity in someone’s blood, and can be lethal if ingested orally.

“Consumers who have been exposed to hand sanitizer containing methanol and are experiencing symptoms should seek immediate treatment for potential reversal of toxic effects of methanol poisoning,” the FDA said this summer.

Those symptoms include, but aren’t limited to:

NauseaVomitingHeadacheBlurred visionPermanent blindnessSeizuresComaPermanent damage to the nervous systemDeath

“Although all persons using these products on their hands are at risk for methanol poisoning, young children who accidentally ingest these products and adolescents and adults who drink these products as an alcohol (ethanol) substitute, are most at risk,” the FDA said.

Though hand sanitizer is commonly recommended to help keep your hands clean while in public—or even inside your home—so many of them have been discovered to have methanol, which can be toxic if either ingested or infiltrated wrongly through skin.

For people wanting to continuously stay clean, the FDA and CDC recommend that you wash your hands with soap and water for at least 20 seconds—as needed, or several times a day—and to practice good hygiene. Hand sanitizers are recommended while in public, as long as the product contains at least 60 percent ethanol.

Here’s the list of hand sanitizers recalled so far by the FDA: