Seasonal hair loss is a natural physiological phenomenon that results in a voluminous increase in the daily number of hairs falling out during certain months of the year.
It is estimated that normally 50 to 70 hairs are lost per day while during seasonal changes the average rises to 100 to 150. However, this is usually a temporary condition that tends to normalize within a few weeks.
This phenomenon involves both men and women indiscriminately.
Healthy hair is naturally subject to the physiological hair life cycle, which is usually divided into five main phases:
the ANAGEN PHASE, which is the growth phase of the hair, characterized by rapid and constant growth, the extent of which may vary from individual to individual, but is usually around 1 cm every month and the duration of which may be 2/4 years in men, up to 5/6 years in women,
the CATAGEN PHASE, the duration of which is limited to a few weeks, in which hair growth tends to progressively decrease until it stops completely while the hair bulb tends to rise to the surface of the scalp,
the TELOGEN PHASE, i.e., the concluding period of the hair's life cycle, during which the actual loss of the hair occurs, as it is no longer anchored to the hair follicle and can fall out at the slightest stress,
The EXOGEN PHASE i.e. the time when the hair detaches from the hair follicle and finally
the KENOGEN PHASE, which coincides with a brief "resting" period for the follicle before new hair is born.
Following the above, a distinction must be made between seasonal hair loss and abnormal or pathological hair loss.
In autumn and spring, even in people with thick hair, hair loss can far exceed one hundred hairs per day. In these cases, it is only hair in the TELOGEN phase that falls out (in fact, we talk about seasonal telogen effluvium), whose follicles are already working to produce new hair.
The causes may be many: some attribute it to a simple genetic inheritance rooted in the seasonal process of hair shedding typical of mammals; some believe that the variation in the ratio of hours of light to hours of darkness affects the hormonal balance; some propose a more psycho-sociological explanation of the phenomenon, pointing to the return to the "unhealthy" life of the city, with its negative load of work stress, frenetic rhythms and air pollution, as the primary cause of increased hair loss, while other scientific studies state that it is to be sought starting from the previous months. With regard to autumn, in fact, the sun taken in the summer months would damage the bulb, thus procuring hair loss; in the case of spring, on the other hand, the excessive cold taken in winter would cause vasoconstriction in the scalp, again damaging the bulbs and thus inducing hair loss.
In this light, the autumn and spring periods do nothing but accelerate the life cycle of hair and their physiological renewal.
If, however, the seasonal fall is a relatively normal phenomenon, it becomes pathological and with serious consequences when it overlaps with pre-existing abnormalities of skin or hair, neglected and not managed in the right way.
Hair made brittle by inadequate physical and chemical treatments, skin afflicted with excess sebum or dandruff or on the contrary insufficiently lubricated, are conditions that do not allow the hair to maintain the right balance.
Weakened and inadequately nourished, hair shortens its life cycle, to fall in ruinous way at certain times when the body is under particular stress.
This is why it is important to take care of your scalp and lengths consistently throughout the year, becoming aware of any anomalies, to be managed with specific products, in order to bring the skin and hair back to a normal condition and deal with the almost inevitable hair loss of seasonal changes with the least possible damage, just as it is important to intervene during the period of hair loss itself with products aimed at helping the activity of the hair follicles and supporting the development and growth of new hair.
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