The N2 solution: long-term action The serum offers una prevention and una dual-action correction on all types of spots, even embedded (age, sun, acne, pregnancy). At the heart of the formula, pure niacinamide precisely acts on the spots to correct their size, number, and intensity. Results are visible from the 1st month and strengthened at 3 months: spots are less visible and fewer in number, the skin is unified and brighter. The active consistency of the view, with a non-greasy and non-shiny finish, is perfectly suited for daily treatment in skincare.