Vitamin K

By stimulating blood circulation, vitamin K could potentially reduce the visibility of bluish dark circles. However, while some clinical studies have been conducted on this matter, the scientific evidence remains limited.

Yes, the vitamin K speeds up wound healing, particularly due to its ability to stimulate the epithelialisation process.

The antioxidant properties of vitamin K could potentially protect hair fibres from oxidation, thereby delaying the onset of grey hair. However, this has not been scientifically confirmed at present.

There are three types of vitamin K : vitamin K1 (phylloquinone, phytomenadione or phytonadione), vitamin K2 (menaquinone) and vitamin K3 (menadione). In cosmetics, it is the oxidised vitamin K1 that is used.

In some individuals, the vitamin K may cause an allergic reaction. Therefore, it is recommended to perform a patch test when using a new skincare product for the first time.