This collagen-protecting and brightening serum features our highest concentration of ultra-stable vitamin C and tri-peptides to brighten, diminish the look of dark spots and visibly firm skin. Spa-grade serum powered by the most effective, non-irritating form of vitamin C. Collagen-protecting duo works synergistically to visibly boost skin’s natural elasticity and defend from future free radical damage. Layers perfectly under moisturizer and makeup. Cruelty-Free. Vegan. Made in USA