Seasonal hair loss in fall: Why it happens and what you can do about it.
Autumn brings change - in nature, in the light, in our skin and also in our hair. Many people notice in October and November that more hair is left behind in the brush or shower. What initially seems worrying is often a natural, seasonal process. But when is hair loss normal, when is there more to it and what can you do about it?
Each individual hair lives in cycles. In the so-called anagen phase, it grows actively - this phase lasts two to six years. This is followed by a short transition phase before the hair enters the telogen phase, i.e. the resting phase in which it finally falls out. Around 10 % of our hair is in this resting phase at any time. This percentage often increases in the fall. Studies show that more hair enters the telogen phase at the same time in late summer and fall. The visible effect occurs with a time delay - this is why we usually notice hair loss in October and November, while the cause is already weeks behind.
So-called seasonal hair loss is nothing to worry about - it shows that the hair cycle is working.
Seasonal hair loss, also known as telogen effluvium, is a well-known phenomenon. The sun and light in summer stimulate hair growth. When the days get shorter, the light intensity decreases - and with it the vitamin D level. At the same time, the hormone balance changes: the body produces more melatonin, less oestrogen and fewer growth impulses for the hair follicles. There are also external factors: Heated air, temperature fluctuations, hats that create friction. All of this can cause hair that is already in the resting phase to fall out more quickly. The good news is that autumn hair loss is usually temporary. After a few weeks, the hair cycle regulates itself - new hair begins to grow and the density normalizes.
However, sometimes there is more to it than that. Above-average hair loss over a longer period of time - more than around 100 hairs a day for several weeks - can be an indication of physical or hormonal causes. A noticeably thinning crown, bald areas or itchy scalp are also signals that should be investigated.
| Possible cause | Description |
|---|---|
| Hormonal changes | Hair loss can occur after pregnancy, during the menopause or with thyroid problems. |
| Stress and lack of sleep | Increase cortisol, which weakens the hair root. |
| Nutrient deficiency | Iron, zinc, vitamin D and proteins are essential for healthy hair growth. |
| Genetic factors | In the case of hereditary hair loss (androgenetic alopecia), the hair follicles react more sensitively to dihydrotestosterone (DHT). |
| Scalp diseases | Inflammation, dandruff or fungal infections can disrupt hair growth. |
| Medication & diseases | Certain medications or infections (e.g. after COVID-19) can trigger temporary diffuse hair loss. |
If hair loss visibly changes density or lasts longer, the cause should be clarified medically - there is usually something treatable behind it.
While seasonal hair loss subsides on its own, regeneration can be supported with targeted measures. This is less about miracle cures and more about consistent, healthy routines.
1. nutrition & micronutrients
Hair roots react sensitively to nutrient deficiencies. A protein-rich diet with sufficient iron, zinc, biotin and vitamin D supports growth. Vitamin D levels drop in the fall in particular - a deficiency can have a direct impact on hair density. If you are unsure, a blood test by a doctor can provide information.
2. scalp care
A healthy scalp is the basis for strong hair. Use mild, sulphate-free shampoos and massage the scalp regularly to stimulate blood circulation. Serums with ingredients such as caffeine or peptides can also stimulate the hair follicles. Important: No aggressive products, no constant hot blow-drying - this further irritates the scalp.
3. stress reduction & sleep
Chronic stress is one of the most common, underestimated triggers of diffuse hair loss. Make sure you get enough sleep, relaxation and exercise. Studies show that the hair roots recover measurably when stress hormones fall.
4. medical treatments
If the hair loss is more severe or persistent, medical options may be useful. These include topical preparations with minoxidil, PRP treatments (autologous blood therapy) or targeted hormone regulation. A specialist in dermatology or aesthetic medicine can provide individual advice on which therapy is appropriate.
Hair loss in October and November is part of the natural rhythm for many people. The body adapts to the darker season and this is also reflected on the scalp. As long as the loss remains moderate and no bald patches develop, this is completely normal. If you take care of your scalp, reduce stress and make sure you eat a balanced diet, you can optimally support the natural regeneration process. However, if hair loss is more severe or lasts longer, it is worth having a medical examination - in order to treat deficiencies, hormonal fluctuations or other causes in a targeted manner. Ultimately, autumn is not an enemy of the hair, but a phase of letting go and starting again - just like in nature.
