Dunkin’ is kicking off the summer beverage season with one of its biggest customer promotions of the year, giving away 1 million free medium Refreshers for a limited time as part of a new Barbie-inspired menu launch.
The offer is available on June 8 and June 9 through the Dunkin’ app. Customers who enter the promo code HIBARBIEHIDUNKIN in the “Offers & Rewards” section can unlock a free medium Refresher, provided they are among the first 1 million participants to claim the deal.
Unlike traditional restaurant coupons that remain available for weeks, this promotion is built around urgency. Once the code is activated, customers have three days to redeem their drink, while the promo code itself expires after June 9. With a fixed redemption cap in place, customers may want to act quickly before all available offers are claimed.
The giveaway arrives alongside Dunkin’s newest collaboration with Barbie. The limited-time lineup introduces the Pink Pineapple Refresher and Pink Daydream Refresher, both topped with Barbie Pink Strawberry Cold Foam. The colorful drinks are designed to capture summer demand while tapping into the popularity of branded collaborations that encourage social media sharing and repeat store visits.
Customers are not required to select one of the new Barbie beverages to use the reward. Dunkin’ says the free drink offer can be redeemed on participating Refreshers across the menu, including flavors such as Strawberry Dragonfruit, Mango Pineapple and Pink Pineapple. That broader eligibility could make the promotion attractive to both loyal Dunkin’ customers and first-time app users.
The campaign highlights how major restaurant brands are increasingly using mobile rewards programs to drive engagement. Rather than offering discounts directly at the register, chains are encouraging customers to download apps, join loyalty programs and interact with digital offers. According to the official Dunkin’ newsroom, the Barbie collaboration is part of the company’s latest seasonal marketing effort focused on beverages and customer rewards.
Beyond the free Refresher promotion, Dunkin’ has another limited-edition product planned for June 12. The company will introduce pineapple-shaped collectible cups priced at $10.99. Each cup comes with a free medium beverage, although availability will be limited to just 20 cups per participating store.
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The focus on eye-catching drinks and collectible merchandise follows a broader trend across the quick-service restaurant industry. Dunkin’ has increasingly experimented with larger beverages, specialty flavors and limited-time launches, including the recently introduced 48-ounce bucket drinks that generated significant attention among customers.
For those interested in claiming a free Refresher, the process is straightforward: enter the promo code in the Dunkin’ app before June 9, activate the reward and redeem it within three days. With only 1 million offers available nationwide, waiting until the last minute could mean missing out on the promotion entirely.
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