PUERARIA THUNBERGIANA FLOWER/LEAF/STEM EXTRACT.

This extract operates through multiple pathways to enhance skin vitality. Its high content of isoflavones and flavonoids, particularly puerarin, genistin, daidzin, and quercetin, provides robust antioxidant protection by neutralizing free radicals, thereby mitigating photoaging. As an anti-inflammatory agent, it effectively suppresses the gene expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). For skin hydration, it aids in drawing and retaining moisture, contributing to improved elasticity and reduced dryness. Anti-aging benefits stem from its ability to stimulate collagen synthesis and optimize cellular metabolism and turnover, leading to a reduction in the appearance of fine lines and firmer skin. Furthermore, its skin brightening properties are attributed to the inhibition of melanin synthesis, achieved by downregulating microphthalmia-associated transcription factor (MITF) through Akt/GSK-3β activation, which subsequently reduces tyrosinase and TRP1 transcription, and by interfering with tyrosinase maturation via α-glucosidase inhibition.