McDonald’s Giving Away 10K McRibs to Fans who Shave Their Facial Hair

McDonald’s is giving away 10,000 free McRibs to fans who show off their clean-shaven face or smooth skin.

To claim a free sandwich, McDonald’s says you must post a photo of your cleanly-shaven or baby-smooth face on your public Twitter or Instagram profile, using #Shave4McRibSweepstakes and tag @mcdonalds. Stories do not count.

The promotion is an effort to recognize those who participated in No-Shave November—a non-profit organization devoted to fundraising for cancer research, prevention, and education.  McDonald’s also announced when you buy a McRib on Dec. 2 your purchase will help support their donation to the charity’s cancer initiatives.