Multi-active brightening and anti-aging treatment. It combines 6% tranexamic acid, 10% niacinamide, and encapsulated retinal to fade hyperpigmentation, reduce post-acne marks, and smooth fine lines. How to Use: Shake the bottle 3 to 5 times to evenly disperse the retinal capsules in the serum. Apply 1 to 2 drops to cleansed skin. Use in your PM routine.