That’s another viral “hack” headline, and it’s mostly misleading.
🧂 What people claim
“Put a glass of salt in your car” is usually said to:
- Prevent fog on windows
- Remove moisture/humidity
- Stop bad smells
- Prevent mold
🚗 The reality
Salt (Salt) can absorb a small amount of moisture from the air, but:
- In a car, it’s very limited and slow
- It can clump, spill, or create a mess
- It is not an effective long-term dehumidifier
⚠️ Possible downsides
- Spilled salt can damage surfaces or electronics over time
- It may not reduce humidity enough to prevent fog or mold
- It can attract moisture and become wet quickly itself
🚗 What actually works better
If your goal is moisture control:
- Use a proper car dehumidifier bag (silica gel / calcium chloride)
- Fix leaks or wet floor mats
- Use air conditioning to reduce humidity
- Keep windows slightly ventilated when safe
🧠 Bottom line
