I got this from Twitter, and couldn't find out an expiration date. It was just tweeted 4 hours ago, so I'm sure it's good for now, but don't know for how long.

Here's the tweet itself:
Exclusive coupon code from @KorresUSA - use promo code BUNNY – for 30% off and a free mini lip gloss! www.korresusa.com

If this is wrong or something, please let me know so I can ditch it.