Bushy eyebrows have certainly grown in popularity in the past few years, and even though 90s fashion continues to come back around, the sparse brows of the era are a trend no one wants to revisit. And why would you? Good eyebrows frame the entire face, accentuate the eyes and even help with communication.

Of course, not everyone is blessed with full, fluffy eyebrows, and that's OK. However, unusual eyebrow hair loss is a reason for concern, and talking to a dermatologist, trichologist or hair expert can help you get to the root cause. And when it comes to diagnosing eyebrow hair loss, the cause could be one of many, including an underactive or overactive thyroid.

While you wait for your doctor's appointment, check out what VEGAMOUR found out from the experts about thyroid-related hair loss and what you can do to help get your hair's wellness back on track.

What Type of Thyroid Disease Causes Eyebrow Hair Loss?

Having healthy thyroid plays a more significant part in your overall health than you might think. Dr. Pouya Shafipour, a board-certified physician with Paloma Health, an online medical practice focused exclusively on treating hypothyroidism, told us, "Thyroid hormones are essential for the development and creation of hair follicles. When the body is functioning correctly, hair follicles can regenerate themselves, going through the phases of growth, regression, shedding, then growth again."

Essentially there are two types of thyroid dysfunction, and they can both trigger hair loss:

  • Hyperthyroidism is when the gland works overtime. This type of thyroid disease can cause sleep issues, dramatic weight loss, increased anxiety, weakened muscles, irregular periods, sensitivity and hair growth problems — especially if the condition goes unnoticed for an extended period.
  • Hypothyroidism signals an underactive thyroid gland. When the thyroid function slows down, someone might experience severe fatigue, weight gain, pale skin, coarse or dry hair, very heavy periods, hair loss and in particular, thinning eyebrow hair.

Getting an expert to examine your health properly is imperative because thyroid disorders aren't the only thing that causes hair loss problems. For example, you could have an autoimmune disease (like alopecia areata) or specific nutritional deficiencies that have triggered telogen effluvium. To find out for sure, ask your health care practitioner for a full thyroid panel, which will reveal your overall thyroid health.

Deep Dive: What You Should Know About Hair Loss and Thyroid Disorders

What Are the Signs of Thinning Eyebrows Due to Thyroid Conditions?

An imbalance in the thyroid hormone can cause thinning eyebrows, which can look especially prominent toward the outer edges.

"When the thyroid is either overproducing or underproducing hormones, your hair follicles may not be stimulated as much they need to be, resulting in hair loss—including body hair or eyebrows," explained Shafipour. "One telltale sign of thyroid-related hair loss is losing eyebrow hair, starting on the outer third of your eyebrows, toward your ears."

Consider: Can Your IUD Be the Reason You're Losing Hair?

Do Thyroid Medications Cause Hair Loss?

Unfortunately, eyebrow hair loss thyroid problems don't just occur because of the medical condition. Your thinning hair could also be triggered by the thyroid medication you take to stop eyebrow hair loss, which seems pretty unfair! It also could be that your thyroid medication dosage needs adjusting, or maybe you're simply reacting to the ingredients in the drugs. One thing is for sure; your health comes first. So before you ditch any thyroid medications in frustration, be sure to talk to your prescribing doctor.

Also: These Medications Might Cause Hair Loss

What Can You Do if You Notice Your Eyebrow Hair Thinning?

If a tricky thyroid function is affecting your beautiful brows, here are some natural alternatives you can try to help stop your eyebrow hairs from shedding and promote hair growth.

Also: The Connection Between Hashimoto's Disease and Thinning Hair

Try Topical Treatments

Made with microencapsulated, full-spectrum CBD, the GRO+ Advanced Brow Serum is 100% vegan and suitable for everyday use. It smooths onto the hairs and skin easily, penetrating and soothing the entire brow area. The phyto-actives in the blend will help you work toward fuller, healthier-looking brows.

If you prefer a formula without CBD, try the original vegaBROW Volumizing Serum for thicker, fuller brows in as soon as 30 days of consistent use. Check out this incredible before and after picture from a customer who used vegaBROW for six weeks.

vegaBROW Volumizing Serum Before and After

Read: GRO vs. GRO+ — What's the Difference?

Lower Your Stress Levels

We know, we know, it's easier said than done, but chronic stress can cause you to lose hair all over your body. Hair follicles lacking oxygen combined with fluctuating hormone levels could result in serious hair fall.

Eat Calcium-Rich Foods or Take Supplements

Think figs, leafy greens and kefir. Khoshaba explained, "There is no magical cure for regrowth other than taking the prescribed medication and having a healthy diet with calcium-rich foods and/or supplements taken four hours apart from your levothyroxine dose."

Put Down the Tweezers

 This one might seem obvious, but as your brows start to change shape, you might be tempted to give them a tidy. Rather than pluck away at them and risk permanent bald patches, use makeup to fill in the gaps.

Get Help: The Ultimate Guide to Saving Thin Eyebrows

Stock Up on Fatty Acids

Nuts, seeds, oily fish and plant oils such as flaxseed oil and canola oil are all full of healthy fats, including hair-boosting omega-3s.

Take Your Vitamins

Look for supplements that feature vitamins B-5, 6 and 12, which work to support your body's natural keratin and collagen production. The GRO Biotin Gummies feature an abundance of minerals and vitamins that help keep your hair glossy and full-looking.

GRO Biotin Gummies

Consider Cosmetic Procedures

 "Any cosmetic procedure is completely up to the person and will not interfere with the treatment; however, for the time being, it may be better to use makeup rather than microblading, simply because the eyebrows that grow back may be of a different color or slightly different shape," said Khoshaba.

Fill in Your Brows With Pencils and Powders

Makeup is always an option, and you can work wonders with the right tools, such as an eyebrow pencil that matches your brows and some coordinating powder. For best results, learn how to do your eyebrows based on your natural shape.

Explore Eyebrow Transplant Restoration

If your eyebrow loss is permanent, thankfully, there's a procedure that can help frame your face once again. Restoration works in a similar way to a scalp hair replacement and occurs when a section of skin with lots of hair follicles is transplanted to the brow area.

Also: Top 5 Reasons to Subscribe to VEGAMOUR

Will Eyebrows Grow Back After Hypothyroidism?

Experiencing eyebrow hair loss is no fun, but the news isn't all bad. "In most cases, the thinning or loss of hair is temporary, but it may take a few months for the prescribed medication to incentivize hair growth phase again," said Khoshaba. "It's also important to be patient, as the regrown hair may be a different color (namely in case of eyebrows) or texture."

Being diagnosed with a thyroid condition will signal some big life changes. You can help yourself look and feel better by maintaining a nourishing diet, taking the right medication, cutting down on stress and using holistic products on your hair and skin. And as you deal with eyebrow hair regrowth, don't stress by trying to make them look perfectly symmetrical. After all, they're sisters — not twins.


Photo credit: Christian Diokno/Pexels