OG Niacina Skin Hydrating Facial Serum 30mlOG Niacina Skin Hydrating Facial Serum 30ml OG Niacina Skin Hydrating Facial Serum 30ml is designed to deliver intense hydration while helping improve the overall look and feel of the skin. Its lightweight formula penetrates easily, leaving the skin refreshed, smooth, and nourished. Enriched with niacinamide, this serum supports skin balance and helps enhance skin tone and texture over time. It is suitable for daily use and works well for most skin