
Isntree Isntree C-Niacin Toning Ampoule is a serum with 2 active ingredients. Key actives: Niacinamide, Ascorbyl Glucoside, Tranexamic Acid, Glutathione. Fragrance-free.
View product ↗Starts at 100; each row below subtracts points up to its cap.
Overall = 50% Efficacy + 50% Safety. No bonus pad — hitting 100 requires both dimensions to be near-perfect. How scoring works →