Humectant

Mannitol

INCI: Sucrose (related ingredient)

Reviewed by Rosie · Last updated 18 Aug 2026

Sugar alcohol with humectant and antioxidant properties

Addresses

dehydration, dryness

What Is Mannitol?

Mannitol is a naturally occurring sugar alcohol found in seaweed, mushrooms, and various plants. In skincare, it functions as a humectant and antioxidant, helping to attract moisture and protect skin from oxidative stress.

This gentle ingredient provides hydrating benefits while also serving as a natural preservative booster in formulations, contributing to product stability.

Benefits for Your Skin

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Other forms of Mannitol

These appear on ingredients lists under different names but are the same substance. Mannitol is the common form.

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