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Well studied
emollient

Polygonum Aviculare Extract

Knotgrass Extract, Elix-IR

Characteristics

INCI
Polygonum Aviculare Extract
Ru.
Knotgrass Extract, Elix-IR
CAS
84604-04-6
EC
283-280-9
Functions
emollient
polygonum aviculare extract is an extract of the herb of the knotweed, polygonum aviculare l., polygonaceae

Description

A flavonoid-rich plant extract coming from knotgrass that is claimed to protect the skin from both UV and Infrared damage.  By now it's pretty well-known that UV-light is the number one external skin-aging factor, however, *sigh* it looks like UV is not the only kind of light that causes bad things to happen to the skin.

Infrared light (760 nm to 1 mm) is the spectral band above visible light and there is some research concluding that it can accelerate skin aging via multiple mechanisms, one of them being the stimulation of the production of evil collagen-destroying enzymes called matrix metalloproteinases (MMP).

Therefore, protecting the skin from infrared light is probably a meaningful thing to do even though there are currently no proven ways to do so. As for Knotgrass Extract, we only have the manufacturer's claim that says it can inhibit Cathepsin G, an enzyme involved in photoaging and thus modulating the origin of sun and infrared induced MMP production.

The manufacturer also did in-vivo tests to show that a 2% Elix-IR lotion, used twice a day for 28 days can increase skin firmness (by 11.9%) and elasticity (by 4.8%) and visibly reduce the appearance of wrinkles (by 20%) and smoothes the surface of the skin.

Evidence & Research on Polygonum Aviculare Extract

Scientific publications & sources 1
  • 1
    Cho, Soyun, et al. "Effects of infrared radiation and heat on human skin aging in vivo." Journal of Investigative Dermatology Symposium Proceedings. Vol. 14. No. 1. Elsevier, 2009.

Products with Polygonum Aviculare Extract (191 total)

Hair
Face Care
Synonyms
Elix-IR Knotgrass Extract Polygonum Aviculare (Knotgrass) Extract Polygonum Aviculare (Knotweed Bioflavonoids) Extract Polygonum Aviculare (Knotweed) Extract Polygonum ­Aviculare ­Extract Polygonum Aviculare Extract (Knotweed Bioflavonoids) Polygonum Aviculare Extract (Knotweed Plant Antioxidant) Polygonum Aviculare Extract (Natural Knotgrass Extract) Polygonum Aviculare Extract*