Barrier health and microbial balance — the two most foundational things skin needs to function well. B-HIT addresses both simultaneously.Niacinamide at clinical concentration strengthens the barrier, regulates sebum, calms redness and inhibits pigmentation transfer. NAD+ precursors boost cellular energy and mitochondrial function — the metabolic engine driving every repair process in skin. Prebiotics feed the beneficial microbiome, restoring balance to skin that's reactive, congested or inflamed. Exosomes amplify the signal at every layer.Weightless, water-based texture that absorbs instantly and layers cleanly under anything.A HIT Booster — added after WARM UP, before protection. Used consistently, it addresses the root cause rather than managing symptoms. Skin holds hydration longer, reacts less, and functions with noticeably more efficiency.