How are nutrients delivered to the nail unit?

Nutrients are delivered to the nail unit primarily by blood. The nail matrix, which is responsible for producing the nail, receives oxygen and essential nutrients via blood vessels located in the underlying tissue. This blood supply is critical for the growth and health of the nails. The presence of various vitamins, minerals, and proteins in the blood contributes not only to the formation of the nail plate but also affects its strength and overall appearance.

While lymphatic vessels play a role in transporting some fluids and waste products in the body, they are not the primary means by which nutrients reach the nail unit. Nail polish and air exposure do not directly provide any nutrients to the nail. Instead, they serve cosmetic or protective functions, rather than contributing to the biological processes essential for nail health and growth.