Sérum Vivant: The Multi-Corrective Serum for Persistent, Blemish-Prone Skin Sérum Vivant by Biologique Recherche is the brand's advanced answer to a skin concern that rarely resolves on its own: adult, persistent blemishes. Born from the cult legacy of the Vivant collection, this multi-corrective serum was developed for skin that keeps breaking out past its twenties—skin that needs more than aggressive drying to find balance. Formulated with a biotechnological blend of prebiotics, postbiotics, and biomimetic actives, it targets blemishes and redness while preserving the skin's barrier, hydration, and comfort. Benefits How to Use Ingredients Clinical Results FAQ Correct Blemishes, Calm Redness, Rebalance Skin Formulated for Adult Skin That Won't Stop Breaking Out Sérum Vivant targets persistent imperfections without compromising the skin barrier. It reduces the appearance of blemishes and redness while supporting hydration and microbiome balance—so skin clears without becoming reactive, tight, or dehydrated. Key Benefits: Reduces Persistent Blemishes: Clinically shown to reduce persistent blemishes by 42% after 28 days. Rebalances Sebum Production: Reduces excess sebum by 27% after just 14 days, without over-drying the skin. Refines Texture: Visibly refines skin texture by 19% after 14 days. Reduces Visible Redness: Decreases blemish-linked redness intensity by 21% after 28 days. Strengthens the Barrier: Reduces transepidermal water loss by 19%, reinforcing the skin's natural defenses. Supports the Microbiome: Prebiotic and postbiotic actives help maintain a balanced, comfortable skin ecosystem. Why Choose Sérum Vivant? It's not another drying spot treatment—it's a rebalancing ritual for adult, blemish-prone skin. Whether your skin is reactive, dehydrated, or stuck in a cycle of recurring breakouts, Sérum Vivant delivers visibly clearer, calmer skin without sacrificing comfort. How to Use: Step 1: Apply after cleansing and toning, to clean, dry skin. Step 2: Smooth a thin layer over the face, focusing on areas prone to blemishes and redness. Step 3: Follow with your targeted serums and treatment creams. Use morning and evening. When layering with other Biologique Recherche serums as part of a persistent blemish protocol, apply Sérum Vivant just before Spectral, as the second-to-last serum in your routine. Key Ingredients: Inulin (Prebiotic): Helps support the skin microbiome and contributes to the proper functioning of the skin barrier and to overall skin comfort. Yeast Extract (Postbiotic): Helps target blemish-related redness and supports the balance of blemish-prone skin. Polylysine (Biomimetic): A gentle, biotech blemish-targeting ingredient. Cold-process formulated to protect the integrity of its yeast-derived actives, Sérum Vivant is a gelled aqueous serum with a slightly viscous flow, a lightweight, silky glide, and a soft, non-greasy finish. Clinically Proven Results: Tested on blemish-prone skin, including sensitive skin, under dermatological control (21 volunteers, twice-daily application over 28 days). -42% persistent blemishes after 28 days -27% sebum after 14 days -21% redness intensity after 28 days -19% refined texture after 14 days -19% transepidermal water loss after 28 days (skin does not dry out) 90% of users said skin was less oily after 7 days and complexion was more even 95% of users said skin was smoother after just one application FAQ: What is Sérum Vivant for? A multi-corrective serum for adult, blemish-prone skin—specifically persistent, recurring blemishes that tend to show up after age 25. It reduces the appearance of blemishes and redness while supporting microbiome balance, barrier function, and hydration. How is it different from Masque Vivant? Masque Vivant is the cult-favorite mask from the same Vivant collection. Sérum Vivant extends that legacy into a daily leave-on serum, built on the same biotechnological, yeast-derived actives, for targeted day-to-day correction. Is it suitable for sensitive skin? Yes. It was tested on blemish-prone skin, including sensitive skin, under dermatological control, and is formulated to reduce imperfections while preserving skin comfort and barrier integrity. How often should I use it? Twice daily—morning and evening—following cleansing and toning, and before your treatment cream.