New and unused- set of 3- Living Proof Travel Size Perfect Hair Day (PhD) Advanced Clean Dry Shampoo. 2.4 oz. Retail for $18 each. *note slight dent in one of the containers- no damage to product. Perfect Hair Day (PhD) Advanced Clean Dry Shampoo. A dry shampoo that removes oil, sweat, and odor while adding softness and shine for that fresh-out-of-the-shower look and feel. Benefits * Balances scalp's sebum levels * Provides pollution protection Key Ingredients * Odor neutralizers: Create freshness. * Conditioning agents: Give hair a just-washed look and feel—adding softness, shine, and manageability.