When temperatures drop, most of us prepare our skin with thicker moisturizers and protective layers while our hair often gets overlooked or dismissed as an inevitability. Winter weather creates a perfect storm of dryness, friction, and environmental stressors that can leave hair needing some extra TLC but understanding why this happens and how to help can have you protect your strands all season long.
1. What Causes Frizz
Cold temperatures impede water absorption into any porous surfaces and hair is no different. The cold air outside tends to be drier, but even if it is humid, hair struggles to adequately absorb that moisture. Combine that with indoor heating that sucks moisture out of the air and hair is left feeling like a desert. When hair loses moisture, the cuticle attempts to steal moisture from either the inner parts of the hair or the environment to try and compensate. As a result, hair absorbs moisture and swells unevenly, lifted cuticles catch on one another, making hair appear dull and frizzy, and static increases as moisture decreases, amplifying flyaways.
How to help:
Deep-condition weekly, layer a leave-in conditioner with some hair oil, swap cotton hats for satin-lined ones to reduce friction and static.
2. Why Cold Weather Makes Hair Limp and Flat
Limpness may seem like the opposite of frizz, but both originate from moisture imbalance. As we talked about before, the lack of moisture both outside and inside means that hair is dry. Think of it like a plant: an underwatered plant with shrivel up and fall and hair is no different. If there isn't enough moisture, it doesn't have what it needs to sit nice and plump. This in conjunction with wearing hats and scarves further flattens hair right up against the scalp.
How to help:
Use a lightweight volumizing shampoo and rotate between hydrating and oil-balancing products depending on your scalp’s needs. A satin lined hat and scarf would also help with flyaways and friction.
3. Why Hair Growth Slows Down in Winter
Blood circulation can be a difficult thing to manage in the winter time. Just like your fingers and toes, there can be a reduction in blood circulation to your scalp that can lead to fewer nutrients reaching hair follicles in favor of other vital parts of the body. Due to the reduction in blood circulation, your scalp can also become drier from a decrease in sebum production. This has the potential to produce more flakes that clog follicles and disrupt the healthy growth cycles leading to an increase in hair cycling into its resting phase.
How to help:
Massage your scalp regularly, stay hydrated, and use scalp serums or oils to maintain moisture and circulation.
4. Why Cold Weather Contributes to Hair Shedding and Hair Loss
You may notice more strands in your brush during the winter months. With everything we covered in the previous sections added up- it’s completely normal! With the decrease in moisture in the air, hair can become more brittle (especially if it has been colored/chemically treated) that leads to more common breakage. Static and friction from wearing hats cause mechanical damage, stressing certain points in the hair and making them more prone to breakage. The lack of circulation that causes hair to shift into its resting phase can also speed up the resting phase into the shedding phase. These are completely normal parts of the hair growth cycles but it can definitely look scary on the brush! This doesn't even account for the seasonal hormone changes, vitamin D decreasing with less sunlight, and holiday stressors.
The good news: most winter shedding is temporary and improves as the weather warms.
How to help:
Limit heat styling, use protective styles, moisturize consistently, and maintain a nutrient-rich diet.
Final Thoughts
Winter doesn’t have to be the enemy of healthy hair. By understanding how cold weather affects hydration, scalp health, and growth cycles, you can build a routine that keeps your strands moisturized, strong, and resilient all season long.