Authentic! High End Spartan Shampoo. This is the high end Spartan with 12+ hair loss fighting ingredients. The expiration date is 2027. This is the Large version 8.5 ounce, as opposed to the regular 6.8 ounce version which we also sell. All of our Spartan Shampoos are 100% Authentic. These are true Spartan Shampoos and not the imitations that you here about on social media. You get 20% more in this brand new sealed bottle than our medium 6.8 ounce version. All of our Spartan products are stamped with a 2017 expiration date.