Fructooligosaccharides

Fructooligosaccharides (FOS) are a type of carbohydrate derived from plants, often found in fruits and vegetables. In skincare, they act as prebiotics, supporting the growth of beneficial microorganisms on the skin's surface. They also function as humectants, helping to attract and retain moisture, contributing to skin hydration and a healthy barrier.

BenefitGood 2.5 / 4

Hydration i2.5 / 4

Whether the ingredient helps increase the skin’s water content — humectants that attract water, ingredients that reduce water loss, or ones that make skin feel less dry.

Barrier support i2 / 4

Whether it supports the skin barrier — restoring lipids, reducing water loss, aiding barrier repair, or strengthening the skin’s protective function.

Soothing i1.5 / 4

Whether it can calm the skin — linked to less redness, irritation, discomfort, or visible reactivity.

Acne i0.5 / 4

Whether it can help acne-prone skin — reducing clogged pores, excess oil, acne-causing bacteria, inflammation, or breakouts.

RiskVery low 0 / 4

Rated by SpottyLabs' ingredient methodology, independent of brands.

What it helps with

• supports skin microbiome
• hydrates skin
• strengthens skin barrier

Products with Fructooligosaccharides

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Frequently asked questions

What are Fructooligosaccharides?

Fructooligosaccharides (FOS) are natural prebiotics, a type of sugar molecule found in many plants. They serve as food for beneficial bacteria, both in the gut and on the skin.

How do Fructooligosaccharides benefit the skin?

On the skin, FOS help to nourish the skin's natural microbiome, promoting a healthy balance of bacteria. They also act as humectants, drawing moisture into the skin to keep it hydrated and support the skin barrier.