It’s easy to refer friends to Candid if you’re already a Candid customer. Just log onto your account on the Candid website and you’ll be given a referral code that can be shared in multiple ways, including email, text message or via social media. If your friend becomes a Candid customer, they’ll get a free starter kit and $250 off their treatment. And for your trouble, you’ll get a $100 Amazon gift card within 5-7 business days after their first aligners have arrived.