Why Do Eyelashes Fall Out Seasonally Causes And When To See A Dermatologist

It’s not uncommon to notice more eyelashes in your mascara wand or on your pillow during certain times of the year. While losing a few lashes daily is normal—just like hair shedding from the scalp—an increase in loss during specific seasons can be concerning. Seasonal eyelash shedding isn't always a sign of a serious condition, but understanding the underlying causes is key to determining whether it's part of a natural cycle or a symptom requiring medical attention.

The eyelash growth cycle consists of three phases: anagen (growth), catagen (transition), and telogen (resting). Like scalp hair, lashes naturally shed after completing this cycle. However, external and internal factors can accelerate shedding, especially during seasonal transitions such as spring or fall. This article explores the science behind seasonal eyelash loss, identifies common triggers, and outlines when it’s time to seek help from a dermatologist.

Common Causes of Seasonal Eyelash Shedding

Seasonal changes affect more than just the weather—they influence our skin, hair, and even eyelashes. Several environmental and physiological factors contribute to increased lash shedding during certain times of the year.

• Allergies: Spring and fall are peak allergy seasons due to pollen, mold, and dust mites. Allergic reactions often cause itchy eyes, leading to frequent rubbing, which pulls out lashes prematurely.
• Dry Air and Low Humidity: Winter air tends to be dry, both outdoors and indoors due to heating systems. This can dehydrate the delicate skin around the eyes and weaken lash follicles.
• Hormonal Fluctuations: Some individuals experience hormonal shifts tied to seasonal light exposure (similar to seasonal affective disorder), which may indirectly impact hair growth cycles, including lashes.
• Increased Use of Eye Makeup: Seasonal events like holidays or festivals often involve heavier eye makeup. Improper removal or use of low-quality products can damage lashes over time.
• Vitamin Deficiencies: Reduced sunlight in winter months can lower vitamin D levels, while dietary changes during holiday seasons may lead to deficiencies in biotin, iron, or zinc—all vital for healthy hair and lash growth.

Tip: Use a hypoallergenic, fragrance-free moisturizer around the eyes to combat dryness during colder months.

When Is Lash Loss More Than Just Seasonal?

Natural shedding typically involves 1–5 lashes per day. If you're noticing clumps falling out, visible thinning, or bald patches along the lash line, the cause may extend beyond seasonal variation. Chronic conditions and lifestyle habits can mimic or amplify seasonal patterns.

Alopecia areata, an autoimmune disorder, can cause sudden, patchy hair loss—including eyelashes—without warning. It’s not necessarily seasonal but may flare up during periods of stress, which can coincide with seasonal changes like returning to work after holidays or coping with seasonal allergies.

Another concern is blepharitis, a chronic inflammation of the eyelid margins often worsened by cold, dry air. It leads to crusting, redness, and irritation that can result in secondary lash loss. Similarly, thyroid imbalances—both hypothyroidism and hyperthyroidism—can disrupt the hair growth cycle systemically, affecting lashes, brows, and scalp hair alike.

“While some seasonal shedding is expected, persistent or asymmetric lash loss should prompt evaluation by a dermatologist to rule out underlying dermatologic or systemic conditions.” — Dr. Lena Patel, Board-Certified Dermatologist

Do’s and Don’ts for Maintaining Healthy Eyelashes

Maintaining lash health year-round reduces the risk of excessive shedding. The following table summarizes best practices and common pitfalls:

Do’s	Don’ts
Use a gentle, oil-based makeup remover to avoid tugging	Rub or pull at your eyes when removing makeup
Cleanse eyelids regularly, especially if prone to blepharitis	Sleep with mascara on
Apply nourishing serums containing peptides or panthenol	Use waterproof mascara daily—it requires harsher removers
Replace eye makeup every 3–6 months to prevent bacterial buildup	Share mascara or eyeliner with others
Wear sunglasses outdoors to protect lashes from wind and UV exposure	Use eyelash extensions frequently without professional care

Tip: Avoid using cotton pads with rough fibers to remove eye makeup—they can snag and pull lashes.

Mini Case Study: Sarah’s Experience with Seasonal Lash Thinning

Sarah, a 34-year-old teacher from Chicago, began noticing her eyelashes were thinner each spring. At first, she attributed it to switching mascaras, but when the pattern repeated for three consecutive years—worsening alongside her seasonal allergies—she became concerned.

She frequently rubbed her eyes due to itching and used waterproof mascara daily to prevent smudging from tears. Over time, her upper lash line appeared sparse, particularly on the outer corners. After consulting a dermatologist, she was diagnosed with allergic conjunctivitis compounded by mechanical trauma from rubbing and aggressive makeup removal.

Her dermatologist recommended antihistamine eye drops, a switch to non-waterproof mascara, and nightly cleansing with a soothing lid scrub. Within three months, her lash density improved significantly. Sarah now manages her seasonal symptoms proactively, preventing further damage.

Step-by-Step Guide to Assessing and Addressing Lash Loss

If you’re experiencing unusual lash shedding, follow this structured approach to determine the cause and take appropriate action:

1. Track the Pattern: Note when you first noticed increased shedding, whether it correlates with a season, and if other symptoms (itchiness, redness, fatigue) are present.
2. Evaluate Lifestyle Factors: Consider recent changes in makeup routine, skincare products, diet, or stress levels.
3. Inspect Your Products: Discard old mascara (older than 3 months) and check ingredient lists for potential irritants like alcohol or fragrances.
4. Practice Gentle Care: Use a micellar water or oil-based remover, avoid rubbing, and consider using a lash serum with proven ingredients like hyaluronic acid or biotinyl-GHK.
5. Monitor for Improvement: Allow 6–8 weeks for new lashes to grow in. If no improvement occurs, or if loss worsens, schedule a dermatology consultation.
6. Seek Professional Diagnosis: A dermatologist may perform a scalp and lash exam, pull test, or order blood work to check for thyroid function, vitamin levels, or autoimmune markers.

When to See a Dermatologist

While mild seasonal shedding is normal, certain red flags indicate the need for professional evaluation:

• Lash loss occurs in clumps or leaves bare spots on the lash line
• You also experience eyebrow thinning or scalp hair loss
• There is swelling, crusting, or burning sensation along the eyelids
• Symptoms persist beyond the typical seasonal window (e.g., continued loss into summer after spring allergies resolve)
• You have a personal or family history of autoimmune diseases like lupus or alopecia areata

A dermatologist can differentiate between cosmetic concerns and medical conditions through clinical examination and testing. In cases of suspected hormonal imbalance, they may collaborate with an endocrinologist. For inflammatory conditions like seborrheic blepharitis or rosacea-related ocular issues, targeted treatments such as topical antibiotics or anti-inflammatory ointments may be prescribed.

Frequently Asked Questions

Can seasonal allergies really cause eyelash loss?

Yes. Allergies cause eye itching, which leads to frequent rubbing—a primary mechanical cause of premature lash shedding. Additionally, chronic inflammation from allergic conjunctivitis can weaken hair follicles over time.

How long does it take for eyelashes to grow back after seasonal shedding?

Under normal conditions, eyelashes regrow within 6 to 8 weeks. However, if the follicle is damaged due to infection, trauma, or underlying disease, regrowth may be delayed or incomplete without treatment.

Are eyelash serums safe to use year-round?

Most over-the-counter lash serums containing peptides, panthenol, or botanical extracts are safe for continuous use. However, those with prostaglandin analogs (often found in prescription glaucoma medications repurposed for lash growth) can cause side effects like iris pigmentation or eye irritation and should only be used under medical supervision.

Action Plan: Protecting Your Lashes Through the Seasons

Maintaining healthy eyelashes requires consistent care tailored to seasonal challenges. Start by identifying your personal risk factors—whether it’s dry winter air, springtime allergies, or a heavy makeup routine—and adjust your habits accordingly.

Incorporate a simple evening routine: cleanse gently, apply a nourishing serum, and keep hands away from your eyes. During high-allergy seasons, consider wearing glasses instead of contacts to reduce irritation and rubbing. Stay hydrated, eat a balanced diet rich in protein and vitamins, and get adequate sleep to support overall hair health.

If you’ve tried these steps and still notice progressive thinning, don’t wait. Early intervention can prevent permanent damage. Dermatologists offer treatments ranging from topical prescriptions to nutritional counseling and, in some cases, platelet-rich plasma (PRP) therapy to stimulate follicle activity.

“The eyes are one of the most sensitive areas on the body. Treating them with care isn’t just about aesthetics—it’s about preserving function and preventing long-term damage.” — Dr. Marcus Tran, Ocular Surface Specialist

💬 Have you noticed seasonal changes in your eyelash thickness? Share your experience or questions in the comments below—your story could help someone else recognize early signs and seek timely care.