Althaea Officinalis Root Extract
INCI: marshmallow root
Reviewed by Rosie · Last updated 14 Aug 2026
Also known as: marshmallow root
Plant with soothing, redness-reducing properties Also works as a lightweight emollient
EWG Safety Score
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View all →What Is Althaea Officinalis Root Extract?
Althaea officinalis root extract is a soothing, lightly emollient plant extract that’s been shown to offset the rise of enzymes within skin that, left unchecked, break down hyaluronic acid. As such, it can also be said that this plant helps maintain skin’s hydration.
The mucilage (a gelatinous fluid) of this plant contains skin-smoothing polysaccharides including glucuronic acid, rhamnose and galactose. Usage levels in cosmetics range from 1–5% when in solution with ingredients such as glycerin or various glycols. In such a blend, approximately 2–5% is Althaea officinalis root, meaning it doesn’t take much to get visible results from this plant.
Along with documented soothing benefits, Althaea officinalis root has also been shown to interrupt oxidative damage generated within skin after exposure to UVA light, although this benefit varied based on how the plant was grown and cultivated.
Benefits for Your Skin
Clinical Evidence & References
- Toxics, April 2022, pages 1–9
- Carbohydrate Research, December 2021, ePublication
- Phytotherapy Research, March 2021, pages 1,389–1,398
- Frontiers in Pharmacology, March 2020, pages 1–14
- Oxidative Medicine and Cellular Longevity, February 2016, pages 1–9
- International Journal of PharmTech Research, July 2013, pages 1,378-1,385
- Advances in Dermatology and Allergology, June 2013, pages 170–177
Published Research
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Marshmallow root extract: Skin-soothing properties J Ethnopharmacol, 2010
From the Clinic
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These appear on ingredients lists under different names but are the same substance. Althaea Officinalis Root Extract is the common form.
Related Ingredients
Althaea Officinalis Root
A mucilaginous plant extract traditionally used to soothe and condition the skin
Althaea Officinalis Leaf Extract
A plant extract traditionally used to soothe and condition the skin
Althaea Officinalis Leaf/Root Extract
A plant extract traditionally used to soothe and soften the skin
Marshmallow Root
Mucilage-rich root for intense soothing
Aloe Barbadensis Leaf Juice Powder
Shelf-stable aloe powder preserving active benefits
Aloe Barbadensis Leaf Water
A plant-derived hydrating ingredient extracted from aloe leaves
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