You have to share their Facebook post with your friends. Locations.
This is what they posted:
Get a FREE TAN (at participating salons) by SHARING this post on your wall to your friends, and tell them what you love about tanning. Just visit your local Hollywood Tans and make sure a Hollywood Tans associate sees that you’ve shared this and get your reward! 🙂
Free Tan at Hollywood Tans – EXPIRED