Sonya Dakar Ultima C Serum, 1 oz. Targeted Vitamin C Skin Brightening Serum What it is: New! 15% Vitamin C brightening and plumping serum is combined with hyaluronic acid to visibly reduce the appearance of dark spots and improve skin tone for a smoother and brighter complexion. This unique dualaction serum combines the 2 holy grails of skincare: vitamin C and hyaluronic acid. Vitamin C helps brighten skin, increasing luminosity and improving skin texture by up to 28%*. Combined with the power o