If you are a passenger or crewmember you are allowed exceptions for certain hazardous articles such as small toiletries, aerosols, etc for personal or medicinal use. Those exceptions are found in 49 CFR 175.10

Those exceptions do not exist, for example, by ground transport so if you were sending your bags by a ground courier (if you had time on your hands) it probably wouldn't work.

Using FedEx by Air (or another certificated airline) you might get away with it because of the last paragraph of 49 CFR 175.10 which says:

(b) The exceptions provided in paragraph (a) of this section also apply to aircraft operators when transporting passenger or crewmember baggage that has been separated from the passenger or crewmember, including transfer to another carrier for transport to its final destination.
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This is/was intended to cover lost or misrouted luggage; I seriously doubt the FAA will allow luggage to contain any kind of hazmat -- even toiletries -- if there's no passenger going with it. Just my opinion.

Jim