Ingredient Encyclopedia

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Discover what’s inside your skincare — from retinol to aloe vera — with clear guides on benefits, uses, and safety.

Ingredient Encyclopedia

Sage Ferment – Benefits, Side Effects & Uses

by ThankMeNow Editors on Sep 10, 2025
Sage Ferment (Salvia Officinalis Leaf Ferment), a skin-adaptive postbiotic botanical, is created through controlled microbial fermentation to transform large phytochemicals into bioavailable postbiotic metabolites and fermented polyphenols. This process significantly reduces the irritation potential found in raw extracts while enhancing the ingredient's ability to support microbiome-friendly antioxidant defence and barrier-support signalling. Used typically at 1–10% in calming serums and recovery emulsions, it provides a weightless, cooling sensory profile and acts as a "quiet stabiliser" for the skin. Over a 4-week timeline, it effectively reduces reactivity and improves routine tolerance, making it an excellent buffer for sensitive or over-exfoliated skin when paired with potentially irritating actives like retinoids and acids.