SIV Biome Balancing Serum

$48.28 ~~$68~~ In stock

Category: Serums

Spore-based probiotic serum that balances the skin microbiome, reduces acne and redness, and strengthens barrier function with quorum-sensing technology.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Ellie P. ★★★★★ Oct 22, 2026

My skin’s never been this calm during allergy season, and the redness around my nose has faded noticeably. The spore-based formula feels light and absorbs fast, and the quorum-sensing aspect sounds futuristic but it clearly works for me.

Alexander ★★★★★ Oct 21, 2026

After a week of using this, my stubborn redness around my nose is almost gone, and my skin feels noticeably less reactive. The texture is lightweight and absorbs quickly without any stickiness.

Natalie D. ★★★★★ Oct 20, 2026

I was skeptical about a probiotic serum, but the quorum-sensing tech seems to actually work—my breakouts are fewer and my skin feels tougher, less reactive to weather changes. The texture sinks in fast, no greasy film, and I've used it morning and night for three weeks without any irritation.