Sérum à 20 % de vitamine C (avec HA, L-arginine, vitamine E et acide férulique) – 30 ml / 1 fl ozMaximum strength Our maximum strength formula is packed full of active ingredients in market leading concentrations. The massive 20% Vitamin C alone would make this serum one of the most potent formulas available, but to ensure spectacular results we filled our serum full of the most scientifically advanced anti aging ingredients. With a massive 4% Hyaluronic acid, 2. 5 L Arginine, 1% Ferulic acid and 2. 5% Vitamin E this serum is the ultimate