Kombucha Cosmetic
Fermented kombucha. Contains organic acids and polyphenols; soothing effect on the skin surface.
Evidence by route
Topical application
Plant extract. Clinically meaningful effect on human skin is not supported by robust evidence; data limited to in vitro / lab models.
How to read tiers A–F
- CWeak evidence. In vitro data, open-label studies, or expert consensus
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Unknown
About this ingredient
Kombucha in cosmetics is a fermented extract of a Symbiotic Culture of Bacteria and Yeast (SCOBY) grown in sweet tea. Contains organic acids (glucuronic, acetic, lactic), tea polyphenols, B-group vitamins, enzymes, trace alcohol (<0.5%). Where applied. Serums, toners, masks, brightening and mature-skin products (0.5-5%). In Spain in L'Oréal Skin Genesis, Origins, niche natural and k-beauty brands. Often labeled "living" or "fermented product". Evidence base. On cell models of keratinocytes and fibroblasts – antioxidant activity from tea polyphenols. Direct clinical RCTs on topical kombucha on skin barely exist – references usually go to green tea studies (powerful antioxidant) or general postbiotic effects on the microbiome. Safety. CIR has not made a separate assessment. ESCD does not list it as a frequent allergen. Irritation possible from low pH in sensitive skin. Allergic reactions described in single cases. Pregnancy and lactation – safe topically at cosmetic concentrations. Oral kombucha is best avoided in pregnancy due to trace alcohol.
Frequently asked questions
Is Kombucha Cosmetic safe during pregnancy?
Safety data for Kombucha Cosmetic during pregnancy is insufficient. Best avoided when in doubt.
What is Kombucha Cosmetic and what does it do in cosmetics?
Fermented kombucha.
What's the INCI name for Kombucha Cosmetic?
The INCI name is Kombucha Cosmetic.
See Kombucha Cosmetic in a product composition right on the store page
The Evigrade extension adds an evidence panel to iHerb, Sephora, Druni and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.
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