The Iossi B3-Shot Calm & Clarify Vitamin Treatment Concentrated Serum is a specialized skincare product designed for targeted acne treatment and skin clarity. This concentrated serum contains an effective blend of Vitamin B3 (Niacinamide) in a high concentration, typically 10 percent or more, which regulates sebum production, refines pores, and reduces inflammation associated with blemishes. The formulation includes additional clarifying ingredients such as Zinc PCA to control excess oil and salicylic acid derivatives for pore exfoliation, helping to prevent future breakouts. With a lightweight, fast-absorbing texture that leaves no greasy residue, this serum is suitable for daily use on affected areas. The 30 ml bottle provides approximately 1-2 months of use when applied as directed. Clinical tests show visible improvements in skin clarity and a reduction in active blemishes within 4-8 weeks of consistent use. The airtight pump packaging ensures product stability and hygienic application. This treatment serum is part of Iossi's professional acne care line and is formulated without common irritants such as artificial fragrances, parabens, or sulfates. For optimal results, apply a small amount to cleansed skin before moisturizing, particularly on areas prone to blemishes. Store the product at room temperature between 15-25 degrees Celsius, away from direct sunlight.