With NEW boosted percentages of Mandelic Acid, Arginine and Pyruvic Acids for even more effective results, Mandelic Arginine Serum is a blend of amino acids, antioxidants and AHAs that takes skin through a gentle corrective process. Great for all skin types – it is especially beneficial for photo-aged, sensitive, rosacea-prone, dry blemished skin and and young skin. Promoting pro-collagen support and increasing the appearance of skin elasticity, Mandelic Arginine Serum rejuvenates, minimizes topical excess oil and enhances the look of healthy skin.