The FDA told people to throw away Oribe shampoo after analyses detected bacteria in the batches.
The agency noted any user who uses the product might develop an infection.
The contaminated batches were found in California stores exclusively.
The FDA said to take hold of the bottle and send it back for a full refund.
Consumer groups that watch products for buyers encouraged to examine shelves at home now.
The pullback came after TV stations in Arizona and elsewhere aired warnings about the shampoo today.