Why Do My Eyelashes Fall Out More In The Summer And Should I Be Worried

It’s not uncommon for people to notice more eyelashes on their pillow or floating in the sink during the summer months. While losing a few lashes daily is normal—just like shedding scalp hair—seeing an uptick in fallout when temperatures rise can feel alarming. The truth is, seasonal changes, especially those brought by summer, can significantly impact the health of your eyelashes. From increased sun exposure to chlorine-heavy pool days and higher humidity levels, multiple environmental and behavioral factors converge to influence lash retention.

Understanding the root causes behind increased lash shedding in summer is the first step toward addressing it effectively. More importantly, distinguishing between natural shedding and signs of a deeper issue can help you determine whether concern is warranted. This article explores the science behind seasonal lash loss, identifies key contributing factors, and offers actionable strategies to support healthy lashes year-round.

The Natural Eyelash Growth Cycle

Eyelashes, like all hair on the body, follow a cyclical growth pattern consisting of three phases: anagen (growth), catagen (transition), and telogen (resting/shedding). The entire cycle lasts approximately 4 to 11 weeks, with each individual lash spending only about 30 to 45 days in the active growth phase. At any given time, around 15% of your lashes are in the shedding phase, which means losing 1 to 5 lashes per day is entirely normal.

However, external stressors can disrupt this delicate balance. In summer, several environmental conditions accelerate the transition into the telogen phase or weaken the lash structure, leading to more noticeable shedding. Unlike scalp hair, eyelashes have a shorter growth window and are more vulnerable to damage due to their location and frequent contact with products and irritants.

Tip: Don’t panic if you see a few extra lashes in summer—some increase in shedding is expected due to heat and lifestyle changes.

Why Summer Increases Eyelash Shedding

The warmer months introduce a combination of physical, chemical, and behavioral challenges that directly affect lash health. Here are the most common culprits behind increased summer eyelash loss:

1. UV Radiation Exposure

Prolonged exposure to ultraviolet (UV) rays doesn’t just affect your skin—it can also degrade the keratin structure of your eyelashes. UV radiation weakens the protein bonds in hair fibers, making lashes brittle, dry, and more prone to breakage and premature shedding. Unlike scalp hair protected by hats or hair itself, eyelashes remain exposed even when wearing sunglasses, as UV rays can reflect off surfaces like water, sand, and concrete.

2. Chlorine and Saltwater Exposure

Swimming is a staple summer activity, but both chlorinated pools and saltwater from oceans can strip moisture from lashes. Chlorine removes natural oils that keep lashes conditioned, while salt creates a drying effect through osmosis. Over time, repeated exposure leads to fragile lashes that break easily or fall out before completing their growth cycle.

3. Excessive Sweating and Oil Production

In hot weather, your body produces more sweat and sebum. When sweat runs down your face, it can carry bacteria and debris into the lash line, potentially clogging follicles or causing mild inflammation (blepharitis). Oily buildup around the eyes may also interfere with lash adhesion and create an environment conducive to irritation or infection.

4. Increased Use of Eye Makeup and Waterproof Products

Many people wear more eye makeup in summer—especially waterproof mascara—to withstand humidity and perspiration. However, waterproof formulas are often harder to remove and require stronger cleansers or vigorous rubbing, both of which can pull out lashes prematurely. Frequent application and removal place mechanical stress on the follicles, accelerating shedding.

5. Dehydration and Nutritional Gaps

Higher temperatures increase fluid loss through sweating, and many people don’t compensate adequately with hydration. Dehydration affects tissue health, including hair follicles. Additionally, summer diets rich in processed foods and low in essential nutrients like biotin, vitamin E, and omega-3 fatty acids can impair keratin production and weaken lash integrity.

“Environmental aggressors like UV light and chlorine are often overlooked contributors to eyelash thinning. Just as we protect our skin, we should extend similar care to our lashes.” — Dr. Lena Patel, Dermatologist & Hair Specialist

When Should You Be Concerned?

While some increase in lash shedding during summer is typical, certain signs indicate it may be more than just seasonal change. Be alert to the following red flags:

• Sudden, dramatic thinning or patchy loss
• Visible redness, swelling, or crusting along the lash line
• Itching, burning, or discomfort around the eyes
• Lashes falling out in clumps rather than individually
• Changes in eyelid appearance, such as drooping or scaling

If you experience any of these symptoms, consult a dermatologist or ophthalmologist. Conditions like alopecia areata, thyroid disorders, blepharitis, or allergic reactions could be underlying causes. These require medical evaluation and treatment rather than lifestyle adjustments alone.

Do’s and Don’ts for Summer Lash Care

Do’s	Don’ts
Wear UV-protective sunglasses to shield lashes from direct sun	Rub or tug at your eyes when removing makeup
Cleanse lashes gently with oil-free micellar water or mild cleanser	Sleep in waterproof mascara or eye makeup
Hydrate well and eat a balanced diet rich in protein and vitamins	Use expired or shared eye cosmetics
Rinse eyes after swimming to remove chlorine or salt residue	Overuse lash extensions or glue-based products
Apply a nourishing lash serum containing peptides or panthenol	Ignore persistent irritation or inflammation

How to Protect and Strengthen Your Eyelashes in Summer

Maintaining healthy lashes during the hotter months requires proactive care. Consider the following steps as part of your seasonal beauty routine:

Step-by-Step Guide: Summer-Proof Your Lashes

1. Wear Sunglasses Daily: Choose wraparound styles that block UV rays from all angles. This reduces direct exposure and minimizes squinting, which can cause mechanical stress on lashes.
2. Switch to Non-Waterproof Mascara: Opt for smudge-resistant but easily removable formulas. Reserve waterproof mascara for special occasions only.
3. Double Cleanse Gently: Start with an oil-based cleanser to dissolve makeup, followed by a gentle foaming wash. Avoid cotton pads with rough textures; use soft reusable rounds instead.
4. Rinse After Swimming: Immediately after pool or ocean time, splash your face with clean water or use saline solution to neutralize chlorine and salt.
5. Apply a Lash Serum: Use a peptide-enriched serum every night on clean lash lines. Look for ingredients like hyaluronic acid, biotin, and panthenol for strengthening and hydration.
6. Stay Hydrated and Eat Well: Include foods high in omega-3s (like salmon and flaxseeds), protein (eggs, lean meats), and antioxidants (berries, leafy greens) to support keratin synthesis.
7. Avoid Touching Your Eyes: Keep hands away to prevent transferring bacteria and reducing friction-induced fallout.

Tip: Store your lash serum in the fridge during summer—it feels refreshing upon application and helps reduce puffiness.

Real-Life Example: Sarah’s Summer Lash Thinning

Sarah, a 32-year-old teacher and avid swimmer, noticed her lashes were noticeably thinner by mid-August. She was spending weekends at the pool, wore waterproof mascara daily, and often fell asleep without removing her makeup. After two weeks of waking up with crusty lashes and seeing more fallout than usual, she consulted a dermatologist.

The diagnosis? Mild blepharitis caused by bacterial buildup from sweat, chlorine, and residual makeup. Her doctor recommended discontinuing waterproof mascara, using a gentle lid scrub, and applying a hydrating lash serum. Within six weeks of consistent care—including rinsing her eyes post-swim and switching to non-comedogenic products—her lash density improved significantly.

Sarah’s case highlights how seemingly harmless summer habits can accumulate into real damage. With small adjustments, recovery is often quick and effective.

Frequently Asked Questions

Is it normal to lose more eyelashes in summer?

Yes, mild increases in shedding are common due to UV exposure, chlorine, heat, and changes in skincare routines. As long as you're not experiencing pain, redness, or patchy loss, it's likely part of a normal seasonal response.

Can sunscreen near the eyes cause lash loss?

Some chemical sunscreens contain ingredients that may irritate sensitive eye areas if they migrate into the lash line. To minimize risk, use mineral-based sunscreens (zinc oxide or titanium dioxide) and avoid direct application too close to the eyes. Wearing sunglasses provides additional protection.

Will my lashes grow back after summer shedding?

In most cases, yes. If the follicles remain healthy and there’s no underlying medical condition, lashes will regrow within 6 to 8 weeks. Supporting regrowth with proper nutrition, gentle cleansing, and lash serums can speed up the process.

Conclusion: Take Action Without Panic

Experiencing slightly more eyelash fallout in summer doesn’t mean something is wrong—it often reflects the cumulative effect of environmental stressors and lifestyle shifts. By understanding the reasons behind the increase, you can take targeted steps to minimize damage and support healthier growth. Protection from UV rays, mindful makeup use, post-swim care, and good nutrition form the foundation of strong, resilient lashes.

Remember, temporary shedding is different from chronic thinning. Pay attention to warning signs, but don’t let minor seasonal changes cause undue stress. With informed care, your lashes can thrive all year round—even under the brightest summer sun.

💬 Have you noticed seasonal changes in your eyelash health? Share your experiences or tips in the comments—your insight could help others navigate summer lash care with confidence.