First up: the scare story you’ve heard. Antimony. It’s a heavy metal that might leach from some plastics. Sounds terrifying, right?
Here’s the punchline: you’d need to drink from a bottle left in a car in July for months to get a worrying dose. Most studies say a single reuse is totally fine. Most.
But heat is a drama queen. Leave that bottle baking on your dashboard, and it releases tiny amounts of antimony. The science says it’s still below safety limits, but why risk it? Keep it cool.
