The numbuzin No. 3 Blue Bio-Retinol Pore Refining Serum was specially developed for gentle yet effective pore refinement. Thanks to its innovative Blue Bio-Retinol technology, the serum offers a gentle alternative to conventional retinol – ideal for sensitive skin and beginners. With 10% niacinamide, the skins texture is visibly smoothed, the complexion improved, and a more even tone promoted. Additionally, 0.2% BHA clarifies, controls excess sebum, and prevents blemishes. Fermented plant extracts, signal peptides, and phyto-exosomes strengthen the skin barrier and provide lasting hydration. The lightweight texture absorbs quickly and is perfect for your daily K-beauty routine – morning and evening. Suitable for all skin types, especially sensitive skin with enlarged pores or uneven texture.