Biologique Recherche is a renowned French luxury skincare brand, established in 1978 by a biologist, physiotherapist, and doctor—Yvan, Josette, and Philippe Allouche. A cult favorite at Rescue Spa, Biologique Recherche is the cornerstone of our skincare treatments, celebrated for its results-driven formulations. Loved by celebrities, estheticians, and beauty editors alike, this brand is known for its use of pure, concentrated, and potent active ingredients that target key skincare concerns like aging, acne, and dehydration. Among its most popular products are the exfoliating toner Lotion P50, the rebalancing Masque Vivant, and the hydrating Creme Masque Vernix.