How to Get a Free Full-Sized Pantene Product

UPDATE:  PANTENE HAS CONFIRMED THAT TODAY IS FREEBIE FRIDAY!  KEEP AN EYE OUT!  THEY SAID SOMETIME THIS EVENING.
 Once a month, on a Friday which Pantene calls "Freebie Friday," Pantene gives away "samples" of full-size Pantene products.  I recommend "liking" them on Facebook so you can be ready!