i highly doubt that information is true, the salons on the ships use aerosal hairspray all the time, and you can buy it from the salon too. I have never had a problem bringing hairspray onboard it could be that the information pertains to the airlines. I would have your ta double check just to be on the safe side
You can bring an aerosol hair spray on your cruise ship. The confusion may be that, depending on the size, you are not allowed to have aerosol cans in your checked airline baggage. Even this is confusing because TSA does allow "personal size" in the checked baggage but no one has really defined what size is really "personal size."
If you're flying, don't bring the hair spray. If you aren't, go ahead an pack it.
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