Polygonum aviculare (Knotgrass) extract
AKA “Knotgrass Extract
Extract
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Ingredient Facts
Polygonum aviculare (Knotgrass) extract
AKA: Knotgrass Extract
Extract · Skin Conditioning | Emollient | Antioxidant | Soothing · EWG: 4
Plant-Derived
Antioxidant
Emollient
Soothing
Skin Conditioner
Extract
Clean
Knotgrass extract is a naturally derived plant ingredient that softens and smooths skin with emollient benefits. Sourced from this European herb, it helps keep skin feeling nourished and conditioned.
Family
Polygonaceae (Buckwheat family)
Plant Part
Herb
Lifeform
Annual or perennial
Climate
Temperate
CAS #
84604-04-6
Form
Liquid
Plant-Derived
Botanical. Native to Europe, Western Asia. Derived from Polygonum aviculare, a herb native to Europe and Western Asia in the Polygonaceae family. Extracted from the plant material through solvent extraction or maceration methods.
Plant Source
Polygonaceae (Buckwheat family)
Plant Part
Herb
Function
Skin Conditioning | Emollient | Antioxidant | Soothing
Benefits
Locks In Moisture
Traditional Use
Used in traditional European and Asian herbal medicine for wound healing and skin astringency; historically applied to support skin firmness and clarity.
Skin Types
all-skin-types
Best For
Target
Redness
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
all-shades-safe
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: Kew POWO · CosIng · EWG · CIR