SIV BIOME-BALANCING SERUM: THE SKINCARE THAT ADAPTS TO YOUR UNIQUE MICROBIOME
Monica Tolan Skin Experts are delighted to announce that they are now stocking the SIV Biome-Balancing Serum (€90.00) both in-salon and online. This pioneering skincare innovation is designed to adapt to your skin’s unique microbiome, establishing balance and resilience from within.
Harnessing the power of spore-based technology, the SIV Biome-Balancing Serum works with your skin’s natural biology to restore harmony and strengthen the skin barrier. Its quorum-sensing formula reads and responds to your skin’s microbial environment, helping to rebuild a healthy foundation for calm, hydrated, and radiant skin.
This innovative serum targets one of skincare’s newest concerns, “leaky skin”, a condition that arises when the skin barrier becomes compromised due to microbiome imbalance. By rebalancing the skin’s ecosystem, SIV helps prevent inflammation, dryness, and accelerated ageing, leaving the skin looking smoother, more even, and deeply nourished.
“SIV is unlike any serum our clients will have tried before; it’s not just another product to sit on your shelf. It’s designed for those who have tried everything and are still struggling with inflammation, acne, or conditions like dermatitis and perioral dermatitis. If your skin’s microbiome is disrupted, nothing else will truly settle it and that’s where SIV stands apart. It works with your skin’s unique biology to restore balance, calm irritation and bring the skin back to health from within. For anyone dealing with sensitivity or ongoing inflammation, this is a genuine game-changer.”
— Corinna Tolan, Founder, Monica Tolan Skin Experts
Key Benefits:
- Adapts to your unique skin microbiome
- Hydrates, calms, and soothes the skin
- Helps combat inflammation and barrier dysfunction
- Supports healthy collagen and elastin function
- Non-comedogenic and non-irritating
- Dermatologically tested and suitable for all skin types
- Clinically proven and dermatologist approved
Key Ingredient: Bacillus Spores
At the heart of SIV’s formula lies Bacillus Spores resilient bacterial strains that can positively influence and adapt to your skin biome. These spores target overgrown bacteria while promoting the growth of beneficial species, helping the skin to reach a state of homeostasis.
How to Use:
Shake vigorously before use. Apply 1–3 drops once daily to clean, dry, or damp skin. Gently pat into the skin before moisturiser to lock in hydration.
Free from added fragrance, SIV is formulated with biocompatible ingredients to ensure harmony with your skin microbiome. Any subtle scent comes naturally from the active compounds used and dissipates quickly.
The SIV Biome-Balancing Serum (€90.00) is now available exclusively from Monica Tolan Skin Experts both in-salon and via monicatolan.com.

