THE CLAIM Privé's aluminum can uses air-powered technology to hold twice as much product as traditional bottles. A pea-size drop expands into a rich sulfate-free foam that will completely cover even long hair. Bonus: Return empty cans to the salon to be refilled and reused.
THE EXPERT SAYS "One ingredientmethylchloroisothiazolinoneis a chemical preservative that might have been replaced with a more gentle one," observes Wilson.
OUR VERDICT We usually use a ton of shampoo to clean our long hair, but this took only a tiny bit. We also liked the fresh scent that wasn't too perfumey.