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Streptococcus Thermophilus Ferment

What Streptococcus Thermophilus Ferment is & what it does

Streptococcus Thermophilus Ferment is produced by fermenting a culture of the Streptococcus thermophilus bacterium, the same species used in yogurt making. In skincare and sunscreen formulas it is used as a conditioning and humectant ingredient, and ferment ingredients are often valued for the peptides and metabolites they leave behind. It is a biotechnology-derived ingredient rather than a directly harvested plant or mineral.

Is Streptococcus Thermophilus Ferment safe?

Streptococcus Thermophilus Ferment is a biotechnology-derived ingredient made from a bacterium also used in yogurt, and it is generally considered a low-risk cosmetic ingredient. The bacterium is inactivated and used for the conditioning ferment it produces. Individuals with sensitive skin can patch test as usual.

What does Streptococcus Thermophilus Ferment do in skincare?

In skincare and sunscreen formulas, this ferment acts as a conditioning and humectant-type ingredient. Ferments are valued for the peptides, sugars, and other metabolites they leave behind, which can help skin feel soft and hydrated. It is a supporting ingredient rather than a sunscreen active.

Is Streptococcus Thermophilus Ferment vegan?

Streptococcus Thermophilus Ferment is produced from a bacterial culture rather than from animals, so the ferment itself does not contain animal tissue. However, the fermentation may use dairy-derived media in some processes, so strict vegans should confirm sourcing with the brand.

Sunscreens with Streptococcus Thermophilus Ferment

We rate 5 sunscreens that contain it:

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