An essential multitasking niacinamide serum designed to regulate the skin and reduce uneven skin tone Synergie’s award-winning serum with 13% vitamin B3 (niacinamide). This formula strengthens barrier function and boosts water-holding skin lipids to promote a luminous glow within days. As a multitasking cosmeceutical, this is essential for all skin types as it regulates oil flow, minimises skin redness, addresses lines, and reduces uneven skin tone for youthful, dewy skin.