Menaquinone-7

Menaquinone-7 (MK-7) is a naturally occurring form of vitamin K, a fat-soluble micronutrient found in fermented foods and produced by certain bacteria. In skincare formulations, it functions as a skin-protecting agent with reported astringent and sebum-regulating properties.Vitamin K plays a role in various physiological processes, including protein synthesis and cellular signalling. When applied topically, menaquinone-7 is thought to influence skin behaviour through these mechanisms, though the exact pathways in cosmetic use remain an area of ongoing investigation.

Menaquinone-7 is believed to work through multiple pathways. As a form of vitamin K, it participates in protein synthesis and cellular signalling processes that may influence sebaceous gland activity and skin barrier function.The astringent effect is thought to result from the ingredient's interaction with skin proteins, potentially creating a subtle tightening sensation. However, the exact mechanisms of topical menaquinone-7 in cosmetic formulations are not fully characterised, and further research would help clarify its precise mode of action on skin.

Menaquinone-7 is typically included in serums, moisturisers and targeted treatments. Use according to product instructions, generally applied to clean skin once or twice daily. It can be layered with other skincare ingredients, though as with any new product, introduce it gradually to monitor skin response.

Menaquinone-7 is generally well-tolerated in cosmetic formulations. Those taking anticoagulant medications (such as warfarin) should consult a healthcare provider before using vitamin K-containing skincare products, though topical application poses minimal systemic risk.