Streptococcus Thermophilus Ferment
What is Streptococcus Thermophilus Ferment?
Streptococcus Thermophilus Ferment is a cosmetic ingredient derived from the controlled fermentation of Streptococcus thermophilus, a lactic acid bacterium commonly associated with yogurt production. This process yields a lysate rich in bacterial metabolites, polysaccharides, and peptides. Primarily used in moisturizers, serums, and creams within the skin conditioning category, it functions as a humectant by binding water molecules to the skin's outer layer, promoting retention of moisture. Additionally, its components may contribute to skin feel and texture improvement through mild conditioning effects. The ferment is typically obtained via biotechnological methods ensuring purity for topical application, distinguishing it from live probiotics.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Attracts and retains moisture in the skin's surface for improved hydration.
Supports a smoother skin texture as a conditioning agent.
Compatible with various formulations like creams and lotions.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Individuals with dry or dehydrated skin seeking added moisture. | People with known allergies to bacterial ferments or lactic acid bacteria. |
| Users interested in biotech-derived humectants for daily routines. | Individuals with highly reactive skin prone to unexpected sensitivities. |
| Those with normal skin looking for gentle conditioning. | Those preferring to avoid fermented ingredients altogether. |
Safety Notes
- Rated low hazard by EWG with minimal risk of irritation or comedogenicity.
- Generally well-tolerated in cosmetic concentrations for topical use.
Frequently Asked Questions about Streptococcus Thermophilus Ferment
What is Streptococcus Thermophilus Ferment?
A humectant from fermenting lactic acid bacteria, used to draw and hold moisture on skin.
Is it safe for sensitive skin?
It has a low irritation potential and EWG score of 1, but patch test if concerned.
How does it function in products?
Acts as a skin conditioner by boosting surface hydration in moisturizers and serums.