LESPEDEZA CUNEATA CALLUS EXTRACT.

This extract is theorized to deliver its benefits through several biological pathways, drawing from research on broader Lespedeza cuneata extracts. It is believed to provide antioxidant defense by scavenging free radicals like DPPH and ABTS, while boosting intrinsic antioxidant enzymes such as SOD, GST, and CAT. Its anti-inflammatory action is associated with the downregulation of pro-inflammatory cytokines like TNF-α and IL-6, likely through the suppression of the NF-κB pathway. For anti-photoaging and wrinkle reduction, it is thought to modulate gene expression, decreasing factors like PAK, p38, c-Fos, c-Jun, TNF-α, and MMP-3, and inhibiting collagenase and elastase to preserve dermal integrity. Furthermore, it may enhance skin hydration and barrier function by upregulating tight junction proteins. In terms of skin brightening, the extract is indicated to inhibit melanin synthesis by reducing MITF, TRP1, and TRP2 protein levels, while simultaneously increasing phosphorylated Erk and Akt. Preliminary data also suggests a role in wound healing by promoting skin epithelial tissue regeneration and collagen synthesis.