This offer from March 2015 is back!
I unsurprisingly had an unbeknownst account that allowed me to request free Loreal Shampoo. After 9+ years of this freebies gig, I should assume I have an account on every major company's website. Now as for each account's password? Hahahaha, oh man, this could take a while.
Make sure to cycle through the different hair types in the top-right to see all six samples available.