First, let’s get the science out of the way, because I know you’re dying for it. Water spots aren’t actually water; they’re leftover minerals, like calcium and magnesium, that the water left behind after it dried. Think of them as the skeleton of a puddle.
Hard water is the main culprit here, the same stuff that ruins your coffee maker and makes your shower glass look like a crime scene. When it dries on your fabric or leather seat, it leaves a crusty, light-colored stain that screams, “I’ve been neglected.” But we’re not neglectful; we’re just busy binge-watching shows.
