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What age do eyebrows start thinning?

Eyebrows play an important role in facial aesthetics and expression. As we age, eyebrows naturally start to thin and lose density. This can happen for a variety of reasons. In this article, we’ll take a closer look at what causes eyebrow thinning and when it typically starts to occur.

When Does Eyebrow Thinning Usually Start?

Eyebrow thinning is a natural part of the aging process. For most people, eyebrow thinning begins in their 30s or 40s. However, it can start earlier or later depending on your genetics, health, and lifestyle factors.

Here’s a quick overview of when eyebrow thinning tends to start for most people:

  • 20s – Early thinning may start, but is usually not very noticeable
  • 30s – Thinning becomes more apparent for some people
  • 40s – Moderate thinning is common
  • 50s & 60s – More significant thinning continues

While this is the general timeline, eyebrow thinning can start earlier or later on an individual basis. Hormones, genetics, and lifestyle habits all play a role.

What Causes Eyebrows to Thin With Age?

There are a few key factors that cause eyebrow thinning and loss of density over time:

  • Aging hormones – Fluctuating hormones affect hair growth. As we get older, hormone levels change, leading to thinner brows.
  • Genetics – Your genes influence how thick your eyebrows are and when thinning will start.
  • Lifestyle factors – Things like poor nutrition, stress, and lack of sleep can accelerate thinning.
  • Repeated plucking – Overplucking damages follicles, causing thinning over time.
  • Medical conditions – Issues like thyroid disorders can sometimes cause eyebrow loss.
  • Medications – Drugs used to treat conditions like high blood pressure may contribute.

As you can see, a variety of internal and external factors are at play. Your individual timeline will depend on your genetic predisposition as well as lifestyle and health factors.

Early Signs of Eyebrow Thinning

How can you tell if your eyebrows are starting to thin out? Here are some of the early signs to look for:

  • Gaps forming in the brows
  • Less fullness and density overall
  • Brows looking shorter and smaller
  • Overplucked hairs no longer growing back
  • More scaliness and flakiness on brows
  • Sudden loss of hairs while washing or brushing brows

Paying attention to the appearance and thickness of your brows will allow you to catch thinning early. The earlier thinning is caught, the sooner steps can be taken to help.

Factors That Accelerate Eyebrow Thinning

While some eyebrow thinning is inevitable with natural aging, certain factors can expedite the process:

Factor How It Causes Eyebrow Thinning
Genetics Your genes determine your natural brow volume and longevity.
Chronic stress Stress hormones interfere with healthy hair growth.
Lack of sleep Inadequate sleep disrupts hormone balance needed for brows.
Nutrient deficiencies Lacking key nutrients inhibits robust hair growth.
Harsh makeup removal Rubbing and tugging brows can damage follicles.
Repeated waxing/tweezing Excessive removal can permanently damage follicles.
Medical conditions Issues like thyroid disorders affect healthy hair growth.
Medications Drugs like blood pressure meds can contribute to loss.

If you notice thinning brows, minimizing these factors can help prevent or slow further loss. Focus on lowering stress, getting enough sleep, eating a nutrient-rich diet, and handling brows gently.

Can Thinning Eyebrows Grow Back?

The ability of eyebrows to grow back after thinning depends on the underlying cause and severity of the loss.

If thinning is due to temporary factors like stress or nutrient deficiencies, restoring overall health can help brows recover and fill back in over time. Stopping harsh overplucking or makeup removal allows damaged follicles time to heal and reactivate growth.

However, if thinning is due to permanent damage of the hair follicles from chronic plucking or waxing, growth may be impossible. When follicles are damaged beyond repair, the brows will not grow back fully.

For severe thinning due to aging, medical treatments like eyebrow growth serums or hair transplant surgery may be needed to stimulate regrowth. But results are limited if the damage is irreparable.

The key is intervening early when thinning becomes noticeable. Catching it early and addressing the cause gives brows the best chance of recovering.

Treatments and Remedies for Thinning Eyebrows

If your eyebrows are thinning, you don’t have to just accept it. There are several treatment options that can help:

Brow Growth Serums

Serums with peptides and botanical extracts can stimulate follicles and boost brow growth. Use twice daily for at least 3 months to see results.

Brow Transplants

For significant thinning, eyebrow hair transplant surgery involves taking follicles from fuller areas and implanting them into the brows.


Microblading tattoos individual brow hairs to create a fuller, natural looking shape and definition.

Tinting and Makeup

Dyeing and filling in brows makes them appear darker and fuller. Provides a temporary fix while working on regrowth.

Nutrients and Vitamins

Ensuring adequate intake of nutrients like iron, zinc, biotin, and protein supports healthier brow growth.

Stress Relief

Managing emotional stress and getting enough sleep helps balance hormones involved in eyebrow growth.

Talk to your dermatologist or doctor to develop a customized treatment plan based on your degree of thinning and causes.

Preventing Future Eyebrow Thinning

Once you notice eyebrow thinning starting, you can take steps to help prevent further loss:

  • Avoid overplucking and waxing – allow brows to regrow
  • Be gentle when washing, brushing, and handling brows
  • Use brow growth serum to stimulate follicles
  • Take hair-boosting vitamins like biotin and collagen
  • Manage emotional stress and get 7-9 hours of sleep
  • Eat a balanced diet with adequate protein and nutrients
  • See your doctor to rule out any medical issues
  • Ask about possible medications that can worsen thinning

Catching thinning early and making both lifestyle and cosmetic changes can help eyebrows look fuller for longer.

When to See a Doctor

Consult a doctor or dermatologist if:

  • You notice sudden loss of eyebrow hair
  • Thinning seems to occur abruptly or faster on one side
  • Brow loss is accompanied by a rash or scaling
  • Other body hair is also thinning out
  • You have additional symptoms like fatigue or unusual weight gain/loss

Seeking medical advice can help identify or rule out any underlying conditions that may be causing eyebrow thinning.

The Takeaway

It’s normal for eyebrows to begin thinning and losing fullness as we age. For most people, this natural thinning starts sometime during the 30s-50s. Factors like genetics, aging, hormones, and lifestyle habits determine when thinning will begin.

While some thinning is expected, you can take steps to keep eyebrows looking fuller longer. Using brow treatments, preventing damage from plucking, and maintaining overall health are key. If thinning occurs suddenly or seems abnormal, see your doctor to identify potential causes.

Catching eyebrow thinning early and taking a proactive approach offers the best chance of regaining and maintaining lush, beautiful brows.