MILWAUKEE (CBS 58) -- On the heels of No-Shave November, McDonald's is offering fans of the McRib a chance to win a free sandwich for shaving their facial hair. 

Starting Monday, Nov. 30, McDonald's will give a free McRib to the first 10,000 entries from fans who show that they've shaved. 

They say anyone can participate, beard or no beard -- "from your brother, your mother, sister-in-law, or cousin's roommate."

Here's how it works:

• Snap a picture of your cleanly-shaven or smooth face on your public Twitter or Instagram account using #Shave4McRibSweepstakes and tag @mcdonalds.
• The first 10,000 entries will receive a code for a free McRib, available via McDelivery on Uber Eats, while supplies last. 

And in recognition of No-Shave November, each McRib purchase on Dec. 2 will help support a McDonald's donation to the charity's cancer initiatives.