The campaign, created by Adam & Eve DDB, breaks this week and shows Kay and his mother in the kitchen, making sandwiches with the reformulated Flora.
Kay says: "It’s better, because it's tastier," while his mother corrects him with the line, "It's better because it's healthier."
The two continue to bicker about the Flora and Flora Light spreads, while highlighting the reformulation of the product.
The TV work is supported by an iAd featuring Kay and his mother, and feeds into Unilever's £10m relaunch of the Flora brand. Unilever claims that Flora's taste and health credentials have been enhanced through a new cool-blending process used to make the brand's products.
Kay and his mother have already appeared together in a similar campaign for Flora's latest product innovation, Flora Cuisine, the brand's own cooking oil.
The campaign was cleared by the ASA, after the watchdog received complaints about Unilever's claim that Flora Cuisine contains 45% less saturated fat than olive oil, and whether this could be substantiated.
Alessandra Sega, brand manager, Unilever UK, said: "Since the launch of the reformulated Flora, the penetration of Flora Original and Flora Light has increased to 20.6% and 23.1% respectively, indicating that the new Flora is encouraging new consumers to trial, whilst also resonating well with existing fans of the brand.
"This is the second phase of above-the-line activity for the Flora reformulation this year, and the TV commercial really highlights the improved health, as well as taste, credentials of both products."
Creative director Howard Willmott worked on the ad with creative team Jim and Jamie; business director Tom Ellis Jones; account director Charlotte Evans; project manager Nicholas Ellis; planner Elizabeth Jamot, and producer Natalie Powell.Follow @loullamae_es