SIV Biome-Balancing Serum

A calming, microbiome-supporting serum designed to hydrate, soothe, and help strengthen sensitive or irritated skin.

This innovative spore-based formula works with your skin’s natural biology to support a healthier-looking skin barrier and a more balanced skin ecosystem. Using quorum-sensing technology, it helps adapt to your unique skin microbiome — making it a beautiful option for skin that feels reactive, stressed, dry, or easily irritated.

Best For

• Sensitive skin
• Reactive skin
• Dry or irritated skin
• Redness-prone skin
• Eczema-prone skin
• Dermatitis-prone skin
• Compromised skin barrier
• Skin that feels stressed, inflamed, or out of balance

When To Use

Use AM or PM, once daily.

Apply after toner or mist and before moisturizer.

How To Use

Shake the dropper vigorously before use, until the bottom of the dropper appears clear, to help disperse the Bacillus spores throughout the serum.

Apply 2–4 drops to your hands first or directly onto the area of concern. Gently massage, then pat into the skin.

Can be used on damp or dry skin.

For best results, apply after toner and before moisturizer.

KEY INGREDIENTS 

Squalane
A lightweight, skin-identical oil that helps soften, hydrate, and support the skin barrier without feeling heavy.

Caprylic/Capric Triglyceride
A coconut-derived emollient that helps replenish the skin’s surface and reduce moisture loss.

Glyceryl Caprylate
A plant-based emollient that helps restore skin comfort, support moisture balance, and keep the skin feeling soft.

Bacillus Spores
A proprietary blend of spores designed to support a balanced skin microbiome, help reduce the look of imbalance, and promote a healthier skin foundation.

Why You’ll Love It

Helps calm sensitive, reactive skin
Supports a balanced skin microbiome
Hydrates without heaviness
Helps strengthen the look of the skin barrier
Great for irritated or stressed skin
Can support eczema-prone or dermatitis-prone skin
Works beautifully under moisturizer

Zina Tip

Use this when your skin is acting dramatic — redness, irritation, dryness, eczema-prone moments, dermatitis-prone moments, the whole “my skin hates everything” era. This is your calm-down serum for helping the skin feel balanced, supported, and less reactive.