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Lactobacillus/Soybean Ferment Extract

What Lactobacillus/Soybean Ferment Extract is & what it does

Lactobacillus is a genus of lactic-acid-producing bacteria used in cosmetics, often as an inactivated culture or ferment. In skincare and sunscreen formulas it is associated with conditioning and soothing roles and is frequently described as supporting the skin's surface balance. Because it derives from microbial fermentation, it appears in products positioned around skin-friendly or probiotic-inspired care.

Is Lactobacillus/Soybean Ferment Extract safe?

Lactobacillus/Soybean Ferment Extract is a fermentation-derived ingredient used in cosmetics and is generally considered safe at typical use levels. Ferment ingredients are popular in conditioning and so-called probiotic-inspired skincare. Those with soy sensitivities or very reactive skin may want to patch test first.

What does Lactobacillus/Soybean Ferment Extract do in skincare?

In skincare it works as a skin-conditioning ingredient created by fermenting soybean material with Lactobacillus cultures. Ferments like this are often included for their conditioning feel and their association with supporting a comfortable, hydrated-looking skin surface. Its effect depends on concentration and the rest of the formula.

Is Lactobacillus/Soybean Ferment Extract vegan?

This ingredient is produced by fermenting soybean material with bacterial cultures and does not include animal-derived components, so it is generally suitable for vegans. Because the cultures are microorganisms rather than animals, it is typically considered plant- and microbe-based. As always, the finished product's full vegan status depends on its other ingredients and the brand's policies.

Sunscreens with Lactobacillus/Soybean Ferment Extract

We rate 19 sunscreens that contain it, showing the top 10 by overall score:

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