Read on for a comprehensive guide to hair thinning.

If youre lucky enough to have more densely packed follicles, you might not notice thinning right away.

But even with a lot of hair, genetics and hormones can still trigger hair loss over time.

comb with hair

Photo:Carol Yepes/Getty Images

Because fine hair is naturally more delicate and can break more easily, thinning appears more noticeable.

What Causes Hair to Thin With Age?

A process called miniaturization is behind many types of hair thinning.

Eventually, the follicle can stop producing hair altogether.

In women, thinning tends to speed up around menopause when estrogen levels drop.

When estrogen levels decline, the balance shifts toward androgens like DHT, which can trigger follicular miniaturization.

For men, DHT is typically the main driver of hair loss throughout their lifetime.

When Does Hair Thinning Start?

Why Does Hair Thinning Present Differently in Men and Women?

Womens hair follicles are generally more resilient to DHT until estrogen levels drop significantly.

How Much Thinning Is Normal?

Can You Delay the Process?

For both men and women noticing mild thinning, she suggests trying 5% Minoxidil foam.

This topical treatment helps lengthen the growth phase of the hair cycle and can encourage regrowth in thinning areas.