Le Grand Sérum is the ultimate Finishing Sérum; this sublimating elixir was made specifically for Madame Allouche. Thanks to a formula boasting the highest concentrations of active ingredients among all Biologique Recherche serums, Le Grand Sérum is a real ubiquitous serum with anti-ageing, protection and hydration properties. Thanks to its 5 formulation stems, it provides a global and total action, and is a concentrate of softness and long lasting brightening effects. This unique product is a combination of pleasure and high performance. Le Grand Sérum is presented in a golden glass bottle with 30 ml capacity, which comes in a prestige box in white lacquered wood.