Double Fight Tube A: 10% Lactic Acid and 2% Salicylic Acid Tube B: 20% Azelaic Includes a combination of Intensive Hydrogel (10% Lactic Acid + 2% Salicylic Acid) and 20% Azelaic Acid (Azelaic Acid 20%), both containing DermShieldTM. The additive DermShieldTM allows use of the cream without causing irritation. This combination improves the quality of problematic skin and intensively treats skin that suffers from pimples, blackheads and chronically inflamed skin (acne, seborrhea), while significantly reducing the excess of bacteria. Double Fight also treats post-acne pigmentation.