When temperatures fall to 1°C or lower, protective headwear becomes a practical habit for many people in Canada and the United States. Dermatologist and trichologist Tatyana Egorova notes that cold air slows the scalp’s blood flow and can reduce the delivery of nutrients to hair follicles. In discussions with Life, Egorova explained that the hair follicle is a rapidly dividing structure that responds quickly to environmental changes, making winter conditions potentially impactful for hair stability.
Wearing a hat in harsh cold can shield the scalp from wind and dryness, while allowing warmth to support healthy blood circulation. Skipping head coverage in very cold weather may contribute to more shedding for individuals who are predisposed, as the follicle’s growth rate makes it sensitive to external shifts. Egorova emphasizes that this does not mean everyone will lose hair, but protection is a sensible precaution for many people during frosty months.
Genetics and overall health also play a role in how hair looks and feels. A separate perspective from trichologist Melissa Mallam cautions that aggressive brushing from the ends toward the roots can cause breakage and additional shedding. The recommendation is to detangle gently, starting at the ends and working up to the mid-lengths, using a wide-tooth comb or a soft brush designed for fragile hair.
For hair styling, specialists favor accessories that minimize tension on the strands. Silk or satin elastics reduce the likelihood of hair being pulled out or stretched during wear. Sleeping on pillowcases made from silk or satin can likewise lessen friction on the hair while resting, helping maintain smoothness and elasticity overnight. These small choices add up over a winter season that stretches across North American climates.
In the United States, there has been discussion around oral therapies for hair loss. Certain medications have received regulatory approval for safe use under medical supervision, and they can be an option for some people when recommended by a clinician. It is crucial to consult a healthcare professional before starting any treatment, to determine whether this approach is appropriate given individual health status and goals.
Beyond medication, day-to-day care matters as well. Keeping the scalp moisturized helps counteract winter dryness, and a gentle cleansing routine prevents irritation. A lightweight conditioner used sparingly can add moisture without weighing hair down, while leaving a protective leave-in product can shield the hair fiber from environmental aggressors. Hydration, a balanced diet with sufficient protein and iron, and vitamins support follicle resilience through long, cold seasons.
Practical wardrobe choices also make a difference. Hats with soft linings reduce friction between fabric and strands, while properly fitting hats prevent tugging that can loosen hair at the roots. When possible, opt for natural fibers like cotton or wool with a smooth interior, and avoid rough textures that can snag hair. If color-treated or very fine hair is a concern, lighter styling products and minimal heat exposure help preserve tone and strength during winter months.
Winter weather can influence more than appearance. The scalp can feel dry, itchy, or irritated as moisture levels fluctuate. A short, weekly scalp massage can stimulate microcirculation and support nutrient delivery to follicles, while avoiding aggressive scratching. Regular brushing should be gentle, and avoid brushing wet hair, which is more prone to breakage. In Canada and the United States, people often notice seasonal changes in hair condition that are best managed with a thoughtful routine and sensible protection rather than dramatic measures. Regular checkups with a dermatologist or trichologist can help tailor a plan to individual needs and local climate conditions.
Additional tips include being mindful of water quality and plastic exposure in winter routines, and rinsing hair with lukewarm water after exposure to chlorinated or heavily treated water. After any exposure to harsh elements, using a mild conditioner and a light leave-in product can seal in moisture. A steady supply of nutrients through a balanced diet and, when needed, targeted supplements advised by a healthcare professional, supports ongoing follicle health during long winter seasons.