Vitamin K is discussed in skin care mainly in relation to bruising and vascular discoloration. Some topical products claim benefits for bruise appearance, but evidence varies by product and study design. There is no strong evidence that oral vitamin K produces dramatic “anti-aging” effects. The most meaningful role is correcting deficiency states associated with bleeding tendency. For overall skin health, sun protection, adequate protein, vitamin C, sleep, stress management, and avoiding smoking are typically more impactful. If you bruise easily, consider medical evaluation rather than relying only on cosmetics.