Sérum De Beauté Fluide Soyeux Silk Primer SerumSrum De Beaut Fluide Soyeux Silk Priming Serum is a primer that leaves skin feeling instantly refreshed and hydrated. It glides on, soft and supple, ready for foundation. Ensuring optimal coverage and long wear results, its lightweight texture appears to blur fine lines and pores, so skin looks naturally and enhanced, whether worn alone or in preparation for a fuller look.