Numbuzin No.3 Skin Softening Serum (50ml) is a popular Korean skincare serum designed to improve skin texture, boost elasticity, and brighten dullness using 42% Bifida and 21% Galactomyces ferment extracts. This fast-absorbing, lightweight serum deeply hydrates, reduces fine lines, and refines pores, leaving a soft, velvety finish suitable for various skin types.