Modern technologies have led to the emergence of many new fabrics. However, sheep wool remains popular among designers, medical professionals, and consumers around the world. Why are products made from natural wool still in demand much more widely than it may appear at first glance?

History and current trends in the use of sheep wool

Sheep wool has been known to humanity for many centuries and has served as the basis for warm clothing in various climate zones. Archaeological findings confirm the use of wool by the pastoral peoples of Central Asia, European craftsmen, and the peoples of the Middle East.

In the 21st century, according to the International Wool Textile Organisation (IWTO), global production of this material annually exceeds 1.1 million tons, and the increasing popularity is explained by its eco-friendliness, hypoallergenic nature, and multifunctionality. It is worth noting that the demand for woolen products among urban residents is growing due to the trend for a healthy and natural lifestyle.

Mechanisms of heat retention make sheep wool unique

The heat-retaining properties of sheep wool are based on the structure of the fiber, filled with numerous air chambers. Such an internal environment reduces heat loss, allowing body temperature to be maintained at an optimal level even in severe cold. Wool is capable of holding a large volume of air, which makes it suitable to wear both in winter and during the transitional seasons. For example, according to the textile materials laboratory at the University of Leeds, the heat capacity of wool is approximately 25% higher than that of cotton, while synthetic fibers fall significantly short of these values. The “dry heat” that users often mention is created due to moisture evaporating without causing the skin to become chilled, which is especially noticeable when external conditions change.

Effective hygroscopicity

The hygroscopicity, or ability to absorb moisture, of sheep wool is indeed impressive. Test data from the laboratory of textile fibers shows that wool absorbs up to 33% of its own weight in moisture. For comparison, cotton achieves around 8%, and synthetic fabrics retain less than 1%. This unique ability allows the skin to remain dry even during physical activity, as water molecules enter the wool fiber and gradually evaporate under the influence of body heat. Because of this, woolen products are recommended for people of all ages—from infants to the elderly.

Beneficial effect on the skin – the lanolin effect

Sheep wool contains lanolin—a natural wax, which at human body temperature (36–37°C) penetrates into the upper layers of the epidermis. According to research by cosmetologists at the institute of dermatology, lanolin accelerates the regeneration of skin cells, increases its elasticity, and maintains moisture for several hours after contact. The use of woolen products is recommended for the prevention of skin dryness, and creams based on lanolin have long been used in baby care. In theory, it is possible that some of the benefits develop with prolonged and close contact with wool, though in the textile industry the effectiveness of this mechanism requires further research.

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