Quintessential serums are composed of one or several key ingredients. They are the purest, rawest formulas in the Biologique Recherche line. They target specific imbalances such as dehydration, devitalization, fine lines and sebum excess. BIOLOGIQUE RECHERCHE Serum Complexe Iribiol is a purifying serum aimed at preventing and alleviating skin imperfections by regulating sebum secretion and reducing inflammation thanks to anti-microbial active ingredients. The salicylic acid clears out excess debris and skin cells while the zinc heals the epidermis. Complexe Serum Iribiol can be used to treat the occasional acne breakouts (periods of stress, hormonal upheavals, special medication, etc.). Recommended for oily and acne-prone skin conditions. Login to see price BIOLOGIQUE RECHERCHE Collagene Marin is a firming and astringent bio-marine serum that tightens the skin’s pores and rehydrates surface lines. Helps to bind water and restore the barrier functions of the epidermis. Tones and plumps the skins moisture cushion. BIOLOGIQUE RECHERCHE Elastine BIOLOGIQUE RECHERCHE Amniotique BIOLOGIQUE RECHERCHE Dermopore