CITRUS UNSHIU FRUIT JUICE FERMENT EXTRACT FILTRATE.

The extract functions as a skin brightener by inhibiting tyrosinase, an enzyme crucial for melanin production. It delivers antioxidant benefits through its rich composition of carotenoids, flavonoids, and coumarins, shielding the skin from environmental stressors and oxidative damage, including UV-induced effects. Additionally, it exhibits anti-inflammatory properties that help reduce redness. Studies indicate its capacity to increase collagen biosynthesis and mitigate photoaging by decreasing MMP-1 mRNA expression and β-galactosidase levels. It also enhances skin hydration by stimulating hyaluronic acid production and strengthens the skin barrier through the expression of filaggrin and SPT in keratinocytes. Potential antimicrobial and anti-atopic activities are also suggested through regulation of inflammatory chemokines.