Eyebrows don’t completely stop growing, but their growth slows significantly due to factors like aging, hormone changes, and damage to hair follicles. If your eyebrows are getting thinner, the key is to identify the cause—whether it’s medical, nutritional, or cosmetic—and take targeted steps toward treatment or prevention.
The Truth About Eyebrow Growth
- Eyebrow hairs never fully stop growing, but their growth rate can slow down or become irregular over time. This change can be gradual or sudden, depending on various factors like age, hormonal shifts, health conditions, or grooming habits. Understanding the natural eyebrow growth cycle helps us make informed decisions about treatment and care.
Eyebrow Hair Growth Cycle Explained
Eyebrows follow the same biological growth pattern as the rest of the body’s hair but with shorter cycles. There are three main phases:
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Anagen (Growth phase): Lasts 30–45 days; follicles are actively producing hair.
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Catagen (Transition phase): Lasts 2–3 weeks; hair detaches from the blood supply.
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Telogen (Resting/shedding phase): Lasts about 100 days; old hairs fall out, and new ones prepare to grow.
Over time, the anagen phase shortens, leading to slower growth. Aging, stress, or underlying health conditions can also extend the telogen phase, contributing to thinner or patchy brows.
Common Reasons Why Eyebrows Thin Out
Understanding what’s causing eyebrow thinning is essential before choosing a solution.
Aging & Hormonal Shifts
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Natural part of the aging process
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Menopause, thyroid dysfunction, and decreased estrogen/testosterone levels reduce follicle activity
What to do:
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Support follicle health with serums rich in peptides, biotin, and antioxidants
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Incorporate iron and omega-3s into your diet
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Consult a doctor if changes are rapid or unusual
Over-Tweezing and Cosmetic Damage
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Repetitive plucking, waxing, and threading can damage follicles
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Excessive shaping may lead to permanent hair loss
What to do:
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Stop tweezing and give your brows at least 12–16 weeks to recover
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Use brow-friendly cleansers and avoid harsh products
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Consider brow growth serums to stimulate dormant follicles
Medical Conditions (Including Autoimmune Disorders)
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Hypothyroidism: Often causes outer third eyebrow thinning (Hertoghe sign)
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Alopecia areata: Sudden patchy loss due to autoimmune attack
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Eczema, psoriasis: Can inflame and damage the follicle area
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Telogen effluvium: Triggered by stress, illness, or hormonal fluctuation
What to do:
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Get medical tests: TSH (thyroid), ferritin, hormone levels
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Work with a dermatologist to rule out scarring vs non-scarring hair loss (madarosis)
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Manage flare-ups with proper skincare and doctor-prescribed treatments
Nutritional Deficiencies & Stress
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Lack of biotin, iron, zinc, protein, or Vitamin D can contribute to thinning
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Chronic stress affects cortisol levels, accelerating telogen effluvium
What to do:
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Ensure a nutrient-dense diet (leafy greens, lean protein, eggs, nuts)
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Supplement where necessary (with guidance from a health professional)
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Use mindfulness and stress-reducing activities like meditation or yoga
Medications and Medical Treatments
Certain drugs can impair eyebrow growth:
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Chemotherapy
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Anti-thyroid medication
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Blood thinners
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Anti-seizure medications (valproate)
What to do:
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Talk to your doctor about alternatives if you’re experiencing hair loss
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Allow time for follicles to recover after completing medication
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Explore cosmetic options during regrowth
Can You Regrow Eyebrows? What to Expect
Regrowth is possible but depends on the type and extent of the damage. If you’re interested in professional techniques to support brow styling during the regrowth phase, our Eyebrow Lamination Course teaches how to lift and set even the most delicate brow hairs for a fuller appearance.
Non-Scarring Hair Loss (Reversible)
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Telogen effluvium, nutrient deficiencies, and stress-induced loss typically regrow in 3–6 months
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Full results might take up to 12 months, especially for aging-related loss
Scarring Hair Loss (Permanent or Limited Regrowth)
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Overplucking, chronic skin conditions, or trauma may lead to follicle destruction
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In such cases, growth is unlikely without advanced interventions
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Overplucking, chronic skin conditions, or trauma may lead to follicle destruction
When to See a Professional
You should consult a healthcare provider if you notice:
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Outer third thinning (possible hypothyroidism)
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Sudden, patchy, or one-sided hair loss
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Inflammation, redness, or scaling of the brow area
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No regrowth after 4–6 months of care
Recommended tests may include:
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Thyroid panel
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Iron/ferritin levels
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Hormonal profile
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Skin biopsy (for scarring conditions)
Effective Solutions for Thinning Brows
Lifestyle & Nutrition
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Eat whole foods rich in iron, protein, omega-3s, and vitamins B and D
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Stay hydrated
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Prioritise sleep and reduce stress
Topical Treatments
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Use brow serums with:
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Peptides
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Biotin
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Soy protein
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Peptides
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Caution: Avoid using strong hair regrowth agents (like minoxidil) without guidance
Professional Cosmetic Solutions
Explore advanced treatments based on severity:
Treatment |
Best For |
Duration |
Cost (AUD) |
Notes |
Microblading |
Sparse or no brows |
12–18 months |
$400–$800 |
Semi-permanent tattoo |
Lamination |
Styling thin brows |
6–8 weeks |
$60–$120 |
Fluffs and lifts existing hair |
PRP (Platelet-Rich Plasma) |
Stimulating follicles |
3–6 sessions |
$350/session |
Natural method using your blood |
Transplant |
Permanent loss |
Lifelong |
$3,000+ |
Surgical option, longer recovery |
Temporary Makeup Techniques
For quick fixes or ongoing camouflage:
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Pencils for defining sparse areas
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Tinted gels for fluff and hold
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Brow powders for fuller appearance
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Stencils and fiber mascaras for shaping
Apply with a light hand and avoid harsh rubbing or over-layering.
How to Prevent Further Eyebrow Thinning
Let professionals shape brows instead of DIY plucking. If you do groom at home, opt for gentle shaping tools like a clean pair of tweezers or soft Brow Wax rather than aggressive threading or harsh waxes.
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Avoid daily tweezing or waxing
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Let professionals shape brows instead of DIY plucking
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Use gentle cleansers and avoid alcohol-based toners on brow area
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Protect brows from UV exposure and harsh exfoliants
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Stimulate blood flow with occasional brow bone massage
Eyebrow Myths and FAQs
Myth: Eyebrows stop growing completely
Truth: Growth slows but doesn’t halt unless follicles are permanently damaged
