The Summer I Turned Pretty actor, 25, is making the season even sweeter with the all-new Dunkin' Golden Hour Refresher, a tropical combination of Mango, Pineapple and Strawberry Dragonfruit flavors mixed with sweet and tart lemonade served over ice.
A new video ad released Tuesday, July 29 sees Casalegno sitting poolside, letting viewers know he can't help being hailed as the "King of Summer."
"This tan? Genetics. I just got my color analysis back. Guess what? Golden summer, literally!" he says in the clip.
After taking a brief stroll and finding himself on a pool chaise lounge, he admits, "I can't help it. Every time I drink a Dunkin' Golden Hour Refresher, it's like the sun just finds me."
"So if sipping these refreshers makes me the king of summer? Guilty as charged," he concludes.
In addition to the Golden Hour Refresher, Dunkin' also rolled out the Blueberry Breeze Refresher: a crisp, blueberry-forward sip inspired by breezy coastal vibes.
However, the possibilities are endless inside of the Dunkin' app, where customers can try their own customizable combinations, including the Blueberry Strawberry Sparkling Refresher and Guava Strawberry Black Tea Refresher.
There's also the Mix Your Own Refresher feature in the app to mix and match any two flavors with a choice of mixer to craft the perfect sip.
And even better, Dunkin' Rewards members can enjoy all medium Refreshers for $3 through Aug. 19, though additional charges, terms, and exclusions may apply, and participating locations may vary.
"There's just something about a summer sunset that makes everything feel a little better, and Dunkin's Golden Hour Refresher really captures that vibe," Casalegno said in a statement. "It's refreshing and kind of just lifts your mood. I've been a Dunkin' fan for years, so teaming up again is such a fun way to celebrate summer."
Casalegno also previously worked with Dunkin' for a $6 Meal Deal campaign featuring James Marsden, Charles Melton, Tramell Tillman and Dylan Efron.
When the partnership was announced in April, each actor appeared in a hilarious ad, sharing their desires to be seen as "more than just a snack" because of things like their "skincare routine" and having "hauntingly symmetrical" features.
"I am the full meal," Marsden, 51, said while in a Dunkin' drive-through.
Dunkin' has also collaborated with it-girls for drinks like the Pink Spritz featuring Paige DeSorbo and Sabrina Carpenter's Strawberry Daydream.
Stay up to date on Dunkin's full summer menu lineup by visiting DunkinDonuts.com.