A national billboard campaign by J Walter Thompson will support the relaunch, and Unilever is also considering cinema advertising.
Unilever has also hired Get Real! to promote the brand to the youth market, with plans to recruit 60 students as student brand managers. Unilever has previously used this approach on Pot Noodle and Peperami.
Activity will begin in April with a merchandising campaign in more than 5000 retail outlets.
Marketing manager Gaelle Bouchard said: "This is a completely new approach for us. Student brand managers are the perfect fit for our brand and they will develop the credibility of Lipton Ice Tea among their peers."