NEEDLY Youth Core Sun Serum delivers comprehensive UV defense with SPF50+ PA++++ while simultaneously addressing visible signs of aging. This innovative formula combines a water-rich serum base (77% hydrating ingredients) with the brand's proprietary TanTan Core Complex—derived from acorn shells—to neutralize photoaging and repair UV-stressed skin. Clinical results demonstrate measurable improvements: 16.6% increase in skin density, 20.9% enhanced elasticity, and 10% reduction in fine eye lines within four weeks. The lightweight texture absorbs instantly without white cast or residue, leaving skin dewy and refreshed. Ideal for those seeking professional-grade sun protection that simultaneously brightens, firms, and hydrates across all skin types.