P&G is offering a Free Sample of Head and Shoulders Hair Endurance for Men. There is usually a limit of how many Free samples you can request in a month. But, I do not see it in the fine print. So maybe they changed their policy. Test it out and see, if you have requested a free sample from them recently.
Also, there are a few other Free Sample Offers still available on the page too- if you are new to the site!