The Reset

A Elevated Experience. The Same Trusted Formula.

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 skin.

We’ve enhanced your Biome Balancing Serum experience with a refined glass bottle, precision dropper, and a new 30mL size - offering more of the formula you love with the same results you trust.

Pairs well with

Biome Balance Within

Regular price $68

Lightweight & stabilizing formula containing physiologically identical ingredients that your skin recognizes.

  • Squalane: Biomimetic oil, molecule derived from non-GMO sugarcane that mimics squalene, beneficial in promoting skin hydration
  • Caprylic/Capric Triglyceride: a mixture of caprylic and capric fatty acids derived from palm oil; help replenish skin’s surface and help it to resist moisture loss
  • Glyceryl Caprylate: a natural, plant-based, emollient derived from glycerin and plant fatty acids; restores the oils of the skin, regulates the skin moisture and
    acts as a humidifier to the skin.
  • Bacillus: A proprietary blend of Bacillus spores support a healthy skin foundation
    and visibly improves skin. Positively influencing your unique skin biome and establishing balance. The spores can help improve the skin microbiome by targeting overgrown bacteria, while facilitating the growth of other essential species- effectively balancing the skin microbiome.

Before use, shake vigorously. Apply 1–3 drops once daily. Pat into dry or damp skin. Apply after cleansing or toning.

Non-comedogenic

Non-Irritating

Clinically Tested

Clinically Proven

Kind to Skin

Safe for Skin

Dermatologically Tested

Safe for Sensitive Skin

Dermatologist Approved

Suitable for All Skin Types (Dry/Normal/Oily)

Do not use around or near the eye area. Do not use if allergic to any of the ingredients. Discontinue use if irritation occurs. Avoid contact with eyes; if contact with eyes occurs, immediately rinse with water. If you have highly sensitive skin, prior to applying fully, we recommend that you first test on a small area of skin.

Glass Packaging – A luxurious, sustainable design that protects the integrity of your serum.

Enhanced Usability – A refined dropper for precise application, ensuring every drop counts.

More of What You Love – Now available in both 15mL and 30mL to fit your skincare needs.

Same Science-Backed Formula – No changes to what makes this serum so effective - just a more premium experience.

Yes, natural settling and clumps are expected. Our serum is intentionally formulated without fillers or suspension agents. Because of this, natural settling and clumps are expected. You may notice small white or beige particles - these are simply the carriers for the bacterial strains. As the serum is used, these particles become more uniform and form a fine beige sediment at the bottom.

How to Use the Serum:

  • Shake vigorously until the sediment is fully dispersed into the liquid. Apply as usual - any visible particles melt into the skin.
  • Once the bottle is set down, the ingredients will naturally settle again. This is perfectly normal. Simply shake before each application.
  • Temperature during shipping can also play a role-colder regions may see slightly tighter particle clusters at first, while other areas won’t see it at all. A few extra shakes will always bring everything back into a fine, even consistency.

  • Supports Balance

    Promotes a harmonious skin environment for improved texture and tone.

  • Delivers Vibrance

    Enhances your skin’s natural radiance by supporting a healthy microbiome.

  • Builds Resilience

    Strengthens your skin’s defenses against environmental stressors and aging.

SIV Biome Balancing Serum

15mL | 30 Day Supply
Perfect for first-time users.

30mL | 60 Day Supply
Offering better value.

Before use, shake vigorously. Apply 1–3 drops once daily. Pat into dry or damp skin. Apply after cleansing or toning.

Ask SIV

Is clumping normal with our serum?

Yes. And they won’t fully disappear.

Our serum is formulated without fillers or suspension agents. Nothing in the bottle is there to hold the particles (the Bacillus spores) in place or make them invisible, so natural settling and clumping are expected.

Shaking lifts the particles and spreads them through the liquid. It does not dissolve them. You will still see them after shaking, in a range of sizes, and that is exactly what you should see. They melt into the skin on application.

Bottom of the dropper showing visible beige clumps Bottom of the dropper showing particles beginning to disperse Bottom of the dropper showing suspended particles of varying sizes
(Pictured Bottom of Dropper)
Visible clumps after shipping
Particles begin to disperse
Suspended particles, sizes will vary

How to use the serum

01

Shake vigorously before every application until the sediment lifts off the bottom and spreads evenly through the liquid. You will still see particles suspended in the serum. That is the formula working as designed.

02

Set the bottle down and the particles begin to settle again within minutes. Perfectly normal. Shake again at your next application.

03

Temperature during shipping plays a role. Colder regions may see tighter clusters at first, other areas won’t see it at all. A few extra shakes will always bring everything back to an even, consistent suspension.

Your serum’s natural movement is a sign of its purity and potency. If you ever have questions, our team is here to support you every step of the way.

Tiny bacteria. Big deal.®

Topical spore serum

Bacillus spores activate a healthy skin foundation and visibly improves skin complexion

Skin Identical

Lightweight & stabilizing formula containing physiologically identical ingredients that your skin recognizes.

Your Face Is Your Base

Before use, shake vigorously. Apply 1–3 drops once daily. Pat into dry or damp skin. Apply after cleansing or toning.

Reduced lesion count, Reduced redness, Improved skin texture & tone

After 40 days

Reduced lesion count, Reduced redness, Improved skin texture & tone.

After 21 days

Reduced lesion count, Reduced redness, Improved skin texture & tone

After 10 days

Reduced redness. Improved skin clarity & tone

After 21 days

Reduced lesion count. Reduced redness. Improved skin tone, texture, and clarity.

After 120 days

Reduced redness. Reduced flakiness. Improved hydration levels. Improved skin tone and texture

After 14 days

Reduced redness. Improved skin tone, texture, and clarity.

After 30 days

Reduced redness. Improved skin tone, texture, and clarity.

After 7 days

Reduced redness. Improved skin tone, texture, and clarity.

After 60 days
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Squalane

Biomimetic oil, molecule derived from non-GMO sugarcane that mimics squalene, beneficial in promoting skin hydration

Caprylic/Capric Triglyceride

A mixture of caprylic and capric fatty acids derived from palm oil; help replenish skin's surface and help it to resist moisture loss

Glyceryl Caprylate

A natural, plant-based, emollient derived from glycerin and plant fatty acids; restores the oils of the skin, regulates the skin moisture and acts as a humidifier to the skin

Bacillus

A proprietary blend of Bacillus spores support a healthy skin foundation and visibly improves skin. Positively influencing your unique skin biome and establishing balance. The spores can help improve the skin microbiome by targeting overgrown bacteria, while facilitating the growth of other essential species- effectively balancing the skin microbiome.

Discover our other products that work together to support your skin's health and balance.

Biome Balance Within $68