Starting from:

$68

SIV Biome Balancing Serum 15mL Glass Bottle

A spore-based formula designed to work with your skin’s natural biology to support and strengthen your skin’s ecosystem at its foundation. This serum is your go-to solution for hydrating, calming and soothing sensitive or irritated skin. It's even great on aging skin. 

Why? Did you know that your skin barrier may be quietly breaking down—without you even realizing it? This phenomenon, leaky skin, is the result of barrier disruption caused by imbalances in the skin microbiome. When this natural barrier fails, harmful bacteria, irritants, and allergens can penetrate the skin, leading to chronic inflammation, premature aging, and increased sensitivity.

This is more than dry or irritated skin—it’s a full-scale breach of your body’s first line of defense.

Unlike conventional creams or serums that only mask symptoms, SIV is the only product on the market engineered to restore and reinforce the skin barrier at the source.
Here’s why SIV stands apart:

  • Targets the root cause of barrier disruption: microbial imbalance
  • Formulated to support healthy microbiota and barrier resilience
  • Fast-absorbing, non-irritating, and effective for all skin types

How to Use 

Before use, shake the bottle vigorously to disperse Bacillus spores throughout the serum.

Apply 1-3 drops to hands first or directly to area, once daily, and gently massage and then pat into skin. Can be used on damp or dry skin.

For optimal results: apply after toner and before moisturizer. If it stings, you may be using too much. Try 1 drop instead. 

Ingredients 

squalane, caprylic/capric triglyceride, glyceryl caprylate, bacillus