Vitamin K1 (phytonadione) is a fat-soluble vitamin used topically to support coagulation factors and reduce visible bruising and capillary-related discoloration. It is most commonly studied for bruising, post-procedure recovery, and reduction of under-eye dark circles linked to vascular leakage.
| Reported effect | How often | Notes |
|---|---|---|
Allergic contact dermatitis | Rare | Documented eczematous reactions, sometimes delayed, to topical vitamin K1 preparations. |
Mild local irritation or redness | Uncommon | Transient stinging or erythema at the application site. |
Pseudoscleroderma / localized skin induration | Very rare | Reported mainly with injectable phytonadione (Texier's disease), not typical of cosmetic topical use. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.