Unilever is highlighting its switch to free-range eggs across its Hellmann's mayonnaise range with a new TV campaign.

Breaking on 1 July, the ad will focus on the quality and provenance of the product's three core ingredients - free-range eggs, vinegar and Omega-3-rich vegetable oil - and forms part of a £5m marketing support package for the brand in 2008.

"We have listened to our consumers, who are looking to the quality and source of product ingredients," said Hellmann's senior category manager Julie McCleave.

Hellmann's move to free-range has been recognised with a Good Egg award from Compassion in World Farming. Unilever hopes the ad will give the brand fresh impetus ahead of the key summer sales period.