Static hair, rough lengths, breakage: every winter, the same story. It's not the cold itself that damages hair, but the dry air and friction it brings. Understanding this mechanism is all it takes to know what to do.
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Why does cold weather damage hair?
Cold air contains very little moisture, and indoor heating dries the atmosphere even further. Hair fibers, which constantly exchange water with their environment, become dehydrated. They become stiffer, more brittle, and accumulate static electricity because a dry fiber conducts charges poorly.
- The difference between the outside cold and the heating accentuates the phenomenon
- The friction from scarves and hats raises the scales.
- A fiber that is already porous is much more exposed than an intact fiber.
We blame everything on the cold, even though it doesn't directly affect the hair—hair is a keratinized structure, it doesn't feel anything. What damages it in winter is the lack of moisture in the air and the friction from wool. Two mechanical problems, therefore two mechanical solutions.
Does the cold make hair fall out?
This is the most common fear, but the data says the opposite. Measurements taken over several years show that the proportion of hairs in the resting phase is at its lowest at the end of winter. In other words, this is the season when we lose the least hair—seasonal shedding occurs in the fall.
8 tips to protect your hair from the cold
These actions are enough to get through the season unscathed:
- Lining your hat with satin or silk will eliminate friction from the wool.
- Wash in lukewarm water rather than hot, as hot water causes the fibers to swell and the scales to lift.
- Dry completely before going outside, either in the open air or at a low temperature.
- Space out heating appliances, which add dehydration to another.
- Apply a leave-in conditioner to the lengths of your hair to limit water loss.
- Humidifying the indoor air, a simple bowl of water on the radiator is enough to make a difference
- Detangle on damp, conditioner-treated hair, never on dry hair, especially on hair with static electricity.
- Trim the ends regularly; a split end will travel up the hair shaft.
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"Incredible! I didn't really believe it, but it's true: by taking care of the roots, the ends follow. My hair is shiny, nourished, and the application is super easy. Very, very good product."
Chloé B., a customer for 2 years
Discover the solutionThe protocol for getting through the winter
Hair fibers that retain moisture well are much more resistant to dry air. Everything hinges on the condition of the hair's surface: exfoliate the scalp to expose the roots, wash with a pH of 5 to minimize swelling, and nourish the lengths with lipids that rebuild the protective film. It's this film, not a hairnet, that makes the real difference in January.
Dry & Damaged Hair Protocol
Comprehensive treatment for dry & damaged hair
To remember
- Cold weather doesn't directly damage hair; it's the dry air that dehydrates it.
- Cold weather doesn't cause hair loss; winter is the season of least hair loss.
- The friction of the wool raises the scales: line your satin bonnet
- A well-nourished fiber retains water and resists dry air
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