Flavio Lucariello - September 02, 2025
Seasonal Hair Loss: What It Is and How to Stop It
Ever notice more hair in your brush around the same time each year? You're not imagining it—seasonal hair loss is a real, biologically rooted phenomenon. While it's often temporary and completely normal, understanding when it happens and why can help you support your follicles better and reduce unnecessary stress.
Do Humans Shed Hair Seasonally?
Yes—just like animals shed their winter coats, humans also experience seasonal shifts in hair density. Research from the British Journal of Dermatology¹ found that shedding tends to increase in late summer and early fall. In fact, more follicles enter the telogen (resting) phase around August and September, reducing overall density.
A long-term study² on healthy women supported this, showing more hair in resting phase during summer and less in late winter.
When Does Hair Shed the Most?
Most people experience increased hair shedding during late summer through early fall (typically July to October). This is the most common seasonal shift, where many follicles transition into the telogen phase—the natural resting period before hair sheds.
However, spring hair shedding can also occur, especially in individuals sensitive to light exposure, temperature changes, or seasonal allergies. This is because your hair cycle responds to environmental cues, including shifts in daylight and hormone production like melatonin.
How long does seasonal hair shedding last?
On average, it can last anywhere from 6 to 12 weeks, depending on your individual biology, stress levels, and hair cycle balance.
When does hair shedding stop?
Once the body adjusts to seasonal changes and follicles re-enter the anagen (growth) phase, shedding typically slows down on its own. However, supporting your scalp during this period can help minimize the fallout and shorten the shedding window.
Why It Happens: The Science of Seasonal Hair Loss
Here’s what’s going on behind the scenes:
- The hair cycle shifts: More follicles enter the telogen (resting) phase during summer months, leading to shedding in late summer or early fall. Learn more about that in our full guide to the 3 stages of the hair cycle.
- Environmental stress: UV rays, chlorine, saltwater, and heat all stress the scalp and damage follicles—contributing to seasonal fallout.
- Hormonal & circadian influence: Reduced daylight alters melatonin production, which may influence hair follicle cycling.
- Telogen effluvium triggers: Sudden weather shifts, travel, stress, or illness during transitional seasons can push more hair into shedding mode.
How to Minimize Seasonal Hair Shedding
You can’t completely stop seasonal hair shifts—but you can reduce the fallout and support your scalp through the change:
- Shield from sun and water damage
Wear a hat, avoid chlorine/salt buildup, and wash with a gentle pH-balanced shampoo - Focus on scalp health
Weekly exfoliation, hydration, and oxygenation improve follicle resilience - Manage internal stressors
Prioritize sleep, movement, and stress-reduction (yoga, meditation, breathwork) - Feed your follicles
Eat iron-rich foods, healthy fats, and take targeted supplements when needed. To learn more on this topic be sure to check our guide over Foods That Boost Hair Growth - Use serums with proven ingredients
Natural topical ingredients like rosemary oil, caffeine, green tea extract, and niacinamide are known to help extend the anagen phase and reduce shedding. Here at Bloome™, we’ve developed serums backed by science to help reduce and fight shedding. Explore Wildflower and Nymphaea here
Meet Your Best Ally Against Seasonal Shedding
If you’re experiencing more shedding during seasonal transitions, your scalp might need more stimulation to hold onto follicles and prevent premature telogen phase entry.
FLO™ is Bloome’s award-winning at-home scalp tool, designed to help:
- Improve scalp circulation
- Reactivate dormant follicles
- Extend the active (anagen) phase using red light, microcurrent, and scalp massage.
This multi-modal technology encourages follicles to stay in their growth phase longer, supports nutrient absorption, and reawakens dormant roots—especially when paired with daily use of Wildflower F1 or Nymphaea F2.
This kind of multimodal stimulation helps your scalp not only absorb nutrients better, but also stimulate your follicles to stay in growth mode longer—especially when combined with targeted serums. And with its auto-serum delivery system, FLO™ ensures you never skip a step in nourishing your roots.
Final Thoughts
Seasonal hair shedding is common—but it doesn’t have to feel out of your control. By understanding the timing, triggers, and solutions, you can support your scalp and follicles through seasonal transitions and maintain healthy, full strands year-round.
If you’re ready to take your routine to the next level, explore our tools and serums designed to work with your biology—not against it.
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FLO™ Brush
Sources and References:
¹Pubmed - “ Seasonal changes in human hair growth”
²Pubmed - “Seasonality of hair shedding in healthy women complaining of hair loss”
