SIV Biome Balancing Serum is a spore-based serum made with Bacillus spores and skin-identical lipids. It is formulated to support a healthy, balanced skin microbiome and skin barrier, and it is designed to fit into any skincare routine.

Clumping is completely expected. Our serum is made without fillers or suspension agents, so nothing in the bottle holds the particles in place or makes them invisible. Shaking spreads the particles through the serum, but it won't dissolve them, so you'll still see some in a range of sizes. They melt into the skin as you apply. Temperature during shipping can also play a role, so colder areas may see larger clusters.

Settling is normal for the same reason. When the bottle sits, the particles settle again within minutes. Just shake well before each use.

Shake vigorously before every use until the sediment lifts off the bottom and spreads through the serum.

Our serum doesn't contain any added fragrance, so the scent you notice comes from the ingredients themselves. It's most noticeable when you first open the bottle, softens as you apply, and fades quickly after application.

Gently press the dropper to release a small amount of serum.

The 15 mL bottle lasts about 30 days with once-daily use.

Store it at room temperature and away from sunlight. No refrigeration is needed, and refrigerating it won't make a difference.

We recommend finishing your bottle within 4 months of opening.

Everyone has a skin microbiome, so SIV is made for all skin types as part of a daily routine.

Apply SIV after cleansing and toning, and before moisturizer. If you use a leave-on benzoyl peroxide product, use it at the opposite time of day from SIV unless a licensed provider has advised otherwise.

Yes. SIV can be used alongside your other skincare products.

Absolutely. You can use SIV on other parts of your body, not just your face. Some people apply 1 to 2 drops directly to the area, and some mix a drop or two into a moisturizer of their choosing.

We don't offer samples of any kind.

Biome Balance Within is our spore-based oral probiotic supplement. Each bottle contains 60 capsules. Please follow the directions on the label.

Biome Balance Within is only available in the United States.

SIV Biome Balancing Serum is made with Bacillus spores and skin-identical lipids: squalane, caprylic/capric triglyceride, and glyceryl caprylate. It contains no added fragrance, fillers, or suspension agents.

Don't use SIV if you're allergic to any of its ingredients, and stop using it if irritation occurs. If the serum gets in your eyes, rinse them right away with water.

Please check with your healthcare provider before using SIV if you are pregnant or breastfeeding.

Anyone under 18 should check with a parent or guardian and a healthcare provider before use.

Orders are processed quickly, so we can't guarantee that an order can be cancelled or changed once it's placed. If you need to make a change, email us at info@sivcare.com right away with your order number and we'll do our best. Once an order has shipped, it can't be cancelled or changed.

Please double-check your shipping information before placing your order. It is the customer's responsibility to make sure the shipping address is correct. If you notice an error, email info@sivcare.com right away with your order number and the correct address. Once an order has shipped, the address can't be changed, and we are not responsible for orders shipped to an incorrect address.

We are not able to ship to PO boxes.

We offer international shipping to many countries. Shipping costs are calculated at checkout based on the destination and order size. Any customs fees, duties, import taxes, or other charges from the destination country are the recipient's responsibility and are not included in our shipping rates. Because customs rules vary by country, we cannot guarantee customs clearance, and shipments may be delayed, refused, or returned by customs.

Biome Balance Within is only available in the United States.

Carriers sometimes mark packages as delivered 1 to 3 business days before they actually arrive. Please check around your property, with neighbors, and with your local post office. If it still hasn't arrived after 2 business days, email us at info@sivcare.com and we'll take care of it.

Yes. The silver collar on our bottles can occasionally slip off, but it doesn't change the serum inside in any way, and your serum is still good to use.

Please email info@sivcare.com with your order number and a photo of what you received, and we'll make it right.

You can update, pause, or cancel your subscription at any time from Manage Subscription on our website. Log in with the email connected to your subscription. If you need help, email us at info@sivcare.com.

We accept returns within 30 days of purchase. We are not able to accept returns of used products. To be eligible, the serum box must still have its shrink wrap intact, and Biome Balance Within must still have its clear neck band intact. Refunds are issued once the returned product arrives back at our warehouse unopened. To start a return, email info@sivcare.com with your order number.

We'd love to have you! Please complete our wholesale application at https://sivcare.com/pages/wholesale-enquiry. Once you're approved, you'll receive a welcome email with everything you need to get started, including wholesale pricing and how to place your first order.

Please reach out to our local partners:

• New Zealand: support@fxmed.co.nz
• Australia: support@therahealth.com.au
• Europe: open an account at www.siveurope.com

Go to sivcare.com and select Login in the upper right corner. Enter the email address connected to your wholesale account (please don't use Shop Pay), then enter the one-time code sent to your inbox. Wholesale pricing appears in your cart once you meet the minimum order.

Make sure you're logged in with your SIV wholesale email and not Shop Pay, and that you have at least 2 bottles of the same size in your cart. If pricing still isn't showing, email info@sivcare.com and we'll update your account.

Email us anytime at info@sivcare.com and our team will be happy to help.