C-MUS 20 is a medical-grade vitamin C serum containing 20% stabilized vitamin C solution. This pH-balanced formula is enriched with hyaluronic acid, ferulic acid, retinol, muskmelon extract and licorice extract to provide comprehensive skincare benefits. Key features: • 20% stabilized Vitamin C solution • pH balanced formula • Contains hyaluronic acid for hydration • Enriched with ferulic acid and retinol • Made with muskmelon and licorice extracts • ISO and GMP certified This serum is part of Nemus' medical cosmetology line, indicating it is formulated to pharmaceutical standards. The stabilized vitamin C solution helps ensure the product maintains its efficacy over time. The combination of active ingredients suggests this product may help with skin brightening, anti-aging, and maintaining skin hydration.