Do you live in a part of the world where the seasons change? During seasonal transitions many men and women notice that they temporarily lose more hair, for example while showering or brushing. This is known as seasonal hair shedding. In most cases it is simply a normal variation within the natural hair growth cycle.
It is important to understand that seasonal hair shedding is different from hair loss caused by genetic factors, nutritional deficiencies, hormonal changes or medical conditions. With seasonal shedding the hair loss is usually diffuse across the scalp rather than concentrated in specific areas, which means visible bald patches normally do not appear.
How long does seasonal hair shedding last?
Hair does not usually fall out at the exact moment the season changes. There is often a delay of several weeks to two or three months between the seasonal transition and the moment when increased shedding becomes noticeable. After that period the situation usually returns to normal as the hair follicles enter a new growth phase.
What we see in research studies is that
- Relatively more hairs are in the resting phase, known as the telogen phase, during the summer.
- In spring a smaller peak of hair loss may also occur.
- This can result in more noticeable shedding during autumn following the summer peak, and sometimes also during spring after a smaller seasonal shift. The exact timing can vary depending on the individual, climate and lifestyle.
In which season hair does hair fall out the most?
For many people the most noticeable increase in seasonal shedding occurs from late summer into autumn. At the same time many people also report increased shedding during spring. This fits with the idea that, besides the main autumn peak, there may be a second smaller seasonal peak.
The reason is that hair does not fall out immediately when the seasons change. Hair first enters the resting phase of the hair growth cycle before it is eventually released from the follicle.
Seasonal hair loss in spring
Many people notice increased hair shedding during spring. This may correspond with the smaller secondary peak observed in some studies. Longer daylight hours and increased exposure to sunlight may also contribute to more noticeable hair shedding during this period.
Practical tips for spring include:
- Be consistent with your hair care routine and avoid changing shampoos every week.
- Treat the scalp gently but regularly.
- Reduce hair breakage by using conditioner, brushing carefully and limiting heat styling.
Seasonal hair shedding in summer
Summer is not necessarily a shedding season for everyone, but it is a period during which hair can experience different types of stress. Ultraviolet exposure, salt water, chlorine and more frequent washing can all affect the condition of the hair.
Research also suggests that a higher proportion of hairs may enter the telogen phase during summer. This can later result in increased shedding in autumn.
It is also important to remember that hair loss in summer is not always seasonal shedding. Other factors may also contribute to increased hair loss during this period, including stress, genetic hair loss and autoimmune conditions.
If you would like to learn how to protect your hair during the warmer months, read our tips on summer hair care.
Seasonal hair shedding in autumn
Autumn is the time when many people most clearly notice seasonal hair shedding. It is common to see more hair in the shower, on your pillow or in your hairbrush during this period.
One explanation often suggested in research is that more hairs enter the resting phase of the hair growth cycle during summer. Several weeks or months later these hairs are released from the follicle, which makes the shedding more visible in autumn.
This does not mean that new hair is not growing. The hair follicles remain active and continue to move through the normal growth cycle. Seasonal shedding simply reflects a temporary shift in the number of hairs that are in the resting phase at the same time.
In most cases this type of shedding is temporary and stabilises within a few weeks to a few months as the follicles return to their usual rhythm.
Hair loss in winter
During winter some people feel that they are losing more hair, but this is often related to other factors rather than true seasonal shedding.
- Hair and scalp may feel drier due to indoor heating and lower humidity.
- Hair may break more easily because the lengths become dry and friction increases from scarves and hats.
- Loose hairs are also easier to notice on darker clothing.
Dryness and friction are more likely to cause hair breakage and rough texture rather than actual hair loss from the root. If you are unsure, check whether the hairs you lose are short and broken or long hairs with a small white bulb at the end.
Would you like to keep your hair healthy during the colder months? Read the following tips:
Identify the underlying causes of hair loss
Hair loss during winter can sometimes be worsened by factors such as stress or nutritional deficiencies. Consulting a hair specialist, often referred to as a trichologist, may help you keep your hair in optimal condition. They can recommend appropriate health tests to assess your overall wellbeing and important blood parameters.
A comprehensive blood test can also help rule out systemic conditions that may contribute to problems affecting the hair and scalp.
Follow a healthy diet and stay hydrated
Unbalanced diets and insufficient intake of essential vitamins and minerals can contribute to hair loss. Nutrients such as vitamins A, E, and B play an important role in maintaining scalp health and supporting hair growth.
A balanced diet that includes green vegetables, lean meat, fish, soy and other protein rich foods can support healthy hair growth and help reduce the risk of hair loss. Staying properly hydrated is equally important, especially in dry winter conditions. Drinking enough water helps maintain hair hydration and may reduce the likelihood of brittle hair and split ends.
Choose the right hair products
When dealing with seasonal shedding, the main goal is to keep the scalp balanced and minimize hair breakage.
- Use a shampoo that suits your scalp type, whether oily, dry or sensitive.
- Apply conditioner or a hair mask to the lengths if your hair tends to become dry.
- If your scalp is easily irritated or prone to flakes, a routine that focuses on scalp care may help maintain balance during periods when the skin reacts more easily.
All of these tips can also help improve your winter hair care routine.
Avoid excessive heat and styling tools
Heat styling does not cause seasonal shedding from the root, but it can worsen breakage and frizz. When this happens during a period of increased shedding, the hair can appear thinner than it is.
Washing with lukewarm water, drying the hair more gently and avoiding tight hairstyles can help protect the hair you have.
Long hot showers or washing your hair with very hot water may damage the hair, particularly during the dry winter months. It is better to wash your hair with lukewarm water at around thirty-five degrees. Try to limit the use of styling tools such as curling irons and hair dryers, as excessive heat can dry out the hair further. If you need to style your hair frequently, use a heat protection spray to minimise damage.
How to stop seasonal hair loss?
Seasonal hair shedding usually cannot be stopped completely, but you can help keep the scalp and hair as stable as possible.
- Follow a balanced diet rich in nutrients and vitamins that support hair growth such as biotin, zinc and iron. Supplements can also provide additional support.
- Keep your routine consistent and give products at least six to eight weeks to show their effects.
- Pay attention to your hair care habits. Use gentle shampoos and conditioners suited to your hair type, limit excessive heat styling and brush your hair carefully.
- Handle wet hair with extra care. Detangle it gently, dry it with a microfibre towel and avoid going to sleep with wet hair.
- Avoid pulling on your hair with your hands or while brushing or combing. Tight hairstyles that place tension on the hair shaft should also be limited.
- Managing stress is also important, as stress can contribute to hair loss. This condition is known as telogen effluvium and may improve with the right routine and appropriate nutritional support. Staying hydrated and drinking enough water also supports overall hair health.
Does seasonal hair loss grow back?
In most cases it does. Seasonal hair shedding is usually temporary, and the hair follicles remain active. If the shedding corresponds with a seasonal peak and decreases within two to three months, this is generally reassuring.
However, if the shedding continues, becomes more severe or is accompanied by other symptoms, it may indicate that another cause is involved. In that case it is advisable to investigate the situation further.
Rescources
Kunz, M., Seifert, B., & Trüeb, R. M. (2009). Seasonality of hair shedding in healthy women complaining of hair loss. Dermatology.
Centre Clauderer. (z.d.). Hair Loss in Summer: What to do?
This information does not replace professional medical advice. If in doubt, always consult a doctor or specialist.
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