I found this messages posted on the P&G Facebook page after today's Pantene giveaway:
So mark your calendar for the next giveaway on Friday, June 24th!
Thx for your interest! We LOVE the excitement! Right now, we’re all out of free Pantene samples. Don’t fret! We still have more fun stuff coming up! Stay tuned Friday for the next giveaway from Crest (U.S. residents only)!