Maxus won the account from incumbent agency Lodestar after a pitch process that also saw Madison and Zenith Optimedia in the running.
On the account win, Ajit Varghese, managing director at Maxus India, said: "We continue to win the trust of clients by showcasing our new philosophy of 'relationship media' and come up with media solutions keeping the consumer and the business at the core."
Varghese added that he was proud to have L'Oreal as part his clientele and would be partnering with them in their vision to build a great business in India.