The Winter Hair Shedding Season You Never Knew About
Understanding Why Hair Shedding Happens in Winter
Winter can be challenging for more than just cold weather. Many people notice more hair in the brush, shower, or on pillows during the colder months. While some shedding is normal, the idea that winter causes more hair loss is not always accurate, it is mostly believed that hair-fall increases in winters as compared to summers, but scientific studies show us mixed results. A long-term study of 823 healthy women found that the lowest proportion of resting (telogen) hairs occurred in late winter, not summer, which means that the researchers found that less natural shedding happened in winter compared to other seasons. Winter didn’t cause more hair to fall out, even though people might notice it more because hair can feel drier and more fragile.
Even though winter may not be when most hairs are biologically in the resting phase, the environmental and physical stresses of winter can make shedding feel more noticeable.
What Makes Hair Feel More Fragile in Winter
Reduced Scalp Hydration
Cold air and indoor heating dry out the scalp. Dryness weakens hair roots, makes the scalp flaky, and increases breakage. When the scalp is dehydrated, oil production slows, and strands become brittle. Dry, brittle hair breaks more easily and that breakage may feel like shedding.
Lower Vitamin D Levels
Shorter days mean less sunlight. That may lower your body’s vitamin D levels, which is important for hair follicle health. With less vitamin D, the growth phase of hair may slow down, and shedding can feel more pronounced. Spending a little time in the sun or taking supplements (when advised by a healthcare provider) may help. Vitamin D supplementation and sun exposure can support hair follicle health in winter.
Seasonal Stress and Fatigue
Winter’s shorter daylight hours often bring mood changes and fatigue. Elevated stress hormones such as cortisol can disrupt the hair growth cycle and shift more hairs into the resting or shedding phase. This can amplify how much hair you notice falling out during winter.
Changes in Blood Circulation
Cold temperatures make blood vessels constrict, reducing blood flow to the scalp. With fewer nutrients and less oxygen delivered to the hair follicles, hairs can become weaker and more prone to breakage. Scalp massage or regular light exercise can improve circulation and support hair health.
Wearing Hats and Scarves
Hats and scarves are essential for warmth, but tight or non-breathable fabrics can rub against the scalp and trap sweat. That friction and moisture may not cause classic shedding, but they can increase breakage, especially when hair is already fragile.
Hot Showers and Heat Styling
Hot water and heat tools strip natural oils from the scalp and hair. This leaves hair dry and brittle, making breakage more likely. During winter, when hair is already more fragile, using lukewarm water and limiting heat styling can reduce damage and prevent breakage.
How to Protect Hair During Winter
Here are practical steps to reduce the feeling of extra hair fallout and keep your scalp healthy:
- Use gentle, hydrating shampoos and conditioners
- Avoid very hot showers
- Use a weekly moisturizing mask or hair oil
- Take vitamin D supplements if your doctor recommends them
- Choose hats and scarves made of soft, breathable fabrics
- Minimize heat styling; use heat protection when you do style
- Drink enough water to stay hydrated
- Practice stress-reducing activities such as sleep, gentle exercise, or meditation
- Massage your scalp regularlyto improve blood flow and nutrient delivery
- Limit chemical treatmentslike coloring or perming, which can weaken hair
- Use a humidifier indoorsto prevent scalp and hair dryness
- Eat a balanced dietrich in protein, iron, zinc, and omega-3 fatty acids
These habits help strengthen your hair, maintain scalp health, and reduce breakage, making seasonal shedding less noticeable.
When to Consult a Professional
Some shedding during winter is natural. But if you feel it is excessive, continues into other seasons, or causes visible thinning, it may indicate more than just winter shedding. Hormonal imbalances, nutrient deficiencies, or scalp conditions can all contribute to more serious hair loss. Seeking a professional early gives you the best chance of finding a cause and getting a treatment plan.
How Ottawa Hair Loss Clinic Can Help
At Ottawa Hair Loss Clinic & Wellness, we understand how distressing seasonal shedding can feel, especially when you expect it to pass but it doesn’t. Led by certified trichologist Mikaella Celestin, our team offers evidence based, individualized care to treat your hair concerns.
We use microscopic scalp analysis and comprehensive blood testing to identify hidden factors like vitamin deficiencies, hormonal issues, or scalp conditions. From there, we build a treatment plan tailored to you: non-invasive therapies, hair regrowth treatments, scalp wellness routines, and nutritional coaching.
Whether you come in for an in-person consultation or choose a virtual appointment, we prioritize compassionate, expert support. Our goal is to help you understand why shedding happens, reduce its impact, and restore healthy, strong hair, through winter and beyond.