RHEUM PALMATUM ROOT/STALK EXTRACT.

This extract operates through several biological pathways to deliver its effects. As an anti-inflammatory agent, it effectively inhibits nitric oxide (NO) production by modulating the PI3K-Akt-mediated NF-κB pathway, with active compounds like cirsiliol and hydrangenol contributing to its soothing action on irritated skin and reduction of redness. Its robust antioxidant activity stems from a rich profile of flavonoids, polyphenols, phenolics, tannins, and terpenes, safeguarding skin cells from free radical damage and oxidative stress. The extract also functions as an astringent, aiding in skin purification, balancing sebum levels, and providing a tightening effect that can minimize the appearance of pores and excess oil. For skin regeneration, it stimulates cellular renewal, contributing to improved elasticity and smoothness, particularly beneficial for mature or fatigued skin. Its brightening properties come from the inhibition of tyrosinase, a key enzyme in melanin production, where gallic acid and catechin exhibit synergistic inhibitory effects to diminish hyperpigmentation like age spots and freckles. Furthermore, it possesses antiseptic and antibacterial qualities, which help to prevent bacterial proliferation, and offers a subtle hydrating benefit.