I know, I know... run a search. Well I've run a bunch with various wordings and could only find one thread talking about champagne, and a bunch talking about carry on bags.

Trying to bring four (yes, four) metal aerosol containers of spray-on sunscreen to Mexico. They're from Target, unopened, shrink wrapped in pairs. Each container is 6 oz. for 24 oz. total.

So... do I run the risk of them exploding? Some mixed info about pressurized or non-pressurized luggage holds. FYI, will be on a NW DC9-50, 753 and A320 for the trip.

Also, TSA says "Aerosol (any except for personal care or toiletries in limited quantities)" are not allowed in checked luggage. I think sunscreen qualifies as "personal care" but I'm not sure if 24 oz. total falls within a "limited quantity."

Any ideas?
Explode?
Allowed?

Thanks!