TIRTIR Niacinamide 20% Serum K-SECRET forms triple layer of small

forms triple layer of small molecule and polymer to strengthen skin barrier

providing for deep penetration and visible results

making the product perfect for topping up while on the go

Rich in antioxidant properties

It helps acne-prone skin as a functional product for soothing acne-prone skin

TIRTIR Niacinamide 20% Serum K-SECRET forms triple layer of smallBrighten, Hydrate, and Smooth for Radiant Skin Discover the transformative power of the TIRTIR Niacinamide 20% Serum, a high performance skincare solution designed to fade blemishes, reduce hyperpigmentation, and minimize enlarged pores. Enriched with 20% niacinamide, alpha arbutin, and glutathione, this serum delivers powerful brightening and anti aging benefits for a luminous, youthful complexion. Key Features and Benefits 20% Niacinamide for