Also known as: Phytonadione, Vitamin K1, Phylloquinone
Vitamin K (phytonadione) plays a role in blood clotting and capillary health. In skincare it is used to reduce the appearance of dark circles, bruising, and spider veins by supporting capillary integrity. Clinical evidence is limited but it is widely used in eye creams and post-procedure products. Most effective when combined with vitamin C and retinol.
Comedogenicity ratings are based on the rabbit ear assay model. Individual skin responses vary. See our article on comedogenicity ratings for context.
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