If such lines appear on your nails after the age of 40, it’s a clear sign that…

Main causes of natural aging after age 40

The most common cause of vertical ridges on nails is normal aging. With age, skin cell regeneration slows down. This phenomenon also affects the cells of the nail matrix (the base of the nail), leading to a decrease in keratin production and, consequently, the appearance of fine ridges.

Dry nails

As we age, our skin becomes drier, and so do our nails. Lack of hydration can weaken the nail plate and accentuate fine lines. Regular exposure to water, soaps, and cleansing products can worsen this dryness.