Blue cap spray 10ml The main active component of the Blue Cap product line is zinc-pirition activated by the process of molecular activation. Zinc-pirition, a substance known for its application in the treatment of seborrheic dermatitis and dandruff, also has certain antibacterial and antifungal properties. In blue cap products, zinc-pirition is molecularly activated, thus achieving a stronger effect of the product. BLUE CAP spray - efficiently alleviates itching, redness, swelling and irritation of the skin of the head and body.