The Niacinamide 15 Acety Glucosamine + Zinc PCA
The main ingredients in COSRX The Niacinamide 15 Serum are 15% Niacinamide (Vitamin B3), Acetyl Glucosamine, and Zinc PCA, working together with hydrating and soothing agents like Allantoin, Trehalose, Butylene Glycol, and Pentylene Glycol, to control oil, minimize pores, and calm redness for smoother, clearer skin.
Size: 20 ml
Ingredients
Ingredients
Shipping & Return
Shipping & Return
Once we receive your return, we’ll process your refund within 5-7 business days. Refunds will be credited back to your original payment method. For more details on how to start a return, visit our Returns page or contact our support team—we’re here to help! Shop confidently knowing we’ve got you covered.
HOW TO USE
HOW TO USE
To achieve the ultimate glass-skin glow, follow these simple steps:
- Prep: After cleansing, apply your favorite toner to balance the skin's pH.
- Apply: Dispense a proper amount of the serum onto your fingertips.
- Absorb: Smooth evenly across the face and neck, then gently tap with your palms to aid maximum absorption.
- Seal: Follow with your moisturizer and SPF during the day to protect your newfound radiance.

