Oh yes, all makeup/hair companies do this! Kerastase is owned by L’Oreal is divided into several categories; L’Oreal Luxe, which covers Lancôme, Yves Saint Laurent and Giorgio Armani. L’Oreal Consumer Products; L’Oreal Cosmetics, Garnier, Maybelline, NYX, Essie, Stylenanda 3CE, Dark & Loveley, Neely, Mg, La Provençale Bio...Their Active Cosmetics Department has these brands, Cerave, La Roche Posay, Decleor, Vichy, Skinceuticals.The L’Oreal Professionals Brands are their haircare, L’Oreal, Kerastase, Redken, Matrix and Pureology.
They own the world.