Epsom Salt
Epsom salt follows the powder rule, not the liquids rule — containers over 12 oz need extra carry-on screening.
Carry-on
Allowed with conditions
Checked
Allowed
Carry-on details
Allowed with conditions. Epsom salt is a powder, not a liquid, so the 3.4 oz liquids rule doesn't apply — instead, powder-like substances follow their own rule. Containers over 12 oz (350 mL) must be placed in a separate bin for X-ray screening and may need additional inspection.
Checked-bag details
Allowed. No restriction on quantity in checked baggage.
Quantity limit
12 oz (per container)
Special instructions
If you're traveling with a large bag of Epsom salt, packing it in checked baggage avoids the extra carry-on screening step.
FAQ
- Does Epsom salt count as a liquid?
- No — it's a powder, which follows a separate screening rule from the 3.4 oz liquids limit. Containers over 12 oz need extra screening in carry-on but have no restriction in checked baggage.
Related items
Source: TSA — What Can I Bring? · Last verified: 2026-08-02
Final decision rests with the security officer at the checkpoint.