Serums carry the highest concentration of active ingredients in any morning ritual, which is why the one you choose determines most of what your skin actually receives. Apply to slightly damp skin for better absorption, and use only two to three drops so nothing pills under moisturizer.
Hyaluronic Acid for Hydration
Hyaluronic acid is a humectant: it draws water into the skin rather than adding it directly, which makes it one of the most widely used hydrating ingredients in skincare. Applied to slightly damp skin and immediately sealed with a moisturizer, it holds that moisture in place. Skip the moisturizer step, and a humectant can end up pulling water out of the deeper layers of your skin instead of holding it at the surface.
The Serum is built around that logic: hyaluronic acid for plumping and smoothing, in a lightweight formula meant to be followed by a moisturizer, never used alone.
GSM10® for Antioxidant Defense
Everyday environmental stressors, pollution, grime, and daily friction generate oxidative stress that breaks down collagen over time. Beau Domaine's own testing has found GSM10® is effective at neutralizing that stress.
The Serum is built around GSM10®, developed from ten years of research by Professor Teissedre into the phenolic compounds in Famille Perrin's Grenache, Syrah, and Mourvèdre grapes (Patent N°EP22206512.0).
ProGR3® for Anti-Aging
ProGR3®, a patent-pending complex built on Professor Lévy's twenty years of progeria research (Patent N°EP22315060.8), targets the mechanisms behind visible skin aging. Both actives are formulated into The Serum, which stays lightweight and fast-absorbing, with a non-greasy finish that layers cleanly under moisturizer.