L’Oreal SA, the world’s largest cosmetics maker, agreed to buy back 8 percent of its stock from Nestle SA for 6 billion euros ($8.2 billion), the first sale of shares by the Swiss company after four decades of ownership.

L’Oreal will pay 3.4 billion euros in cash for 27.3 million shares and exchange its half of the Galderma skincare joint venture for a further 21.2 million shares, the Paris-based maker of Maybelline mascara said in a statement.

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