Introducing the SIV Biome-Balancing Serum—an innovative, spore-based formula designed to work with your skin’s natural biology. The Spore-Based Biome Balancing Serum is a topical formula that adapts to your unique skin microbiome, establishing a healthy skin foundation through quorum-sensing technology. This personalized approach to skincare harnesses your biology to support and strengthen your skin’s ecosystem at its foundation, helping to build resilience and maintain a balanced skin microbiome. This serum is your go-to solution for hydrating, calming and soothing sensitive or irritated skin. Step 1 Before use, shake the dropper vigorously, until the bottom of the dropper is clear, to disperse Bacillus spores throughout the serum. Step 2 Apply 2-5 drops to hands first, once daily, gently warm between fingertips and then pat into skin. Best when used on damp skin. Step 3 For optimal results: apply after toner and before moisturizer.