- wool that has had no previous use is called virgin wool
- wool fiber is mainly made of the protein keratin, which is more vulnerable to environmental and chemical damage than cellulose material in plant fibers
- wool is wavy and may have up to 30 waves per inch
- After all, the wool of a black sheep is just as warm. (E. Lehman)
- Many go out for wool, and come home shorn themselves. (M de Cervantes Saavedra)
- Selective sheep breeding eliminated most of the long, coarse hairs forming a protective outer coat, leaving the insulating fleecy undercoat of soft, fine fiber.
- The amount of crimp corresponds to the thickness of the wool fibers. A fine wool like Merino may have up to a hundred crimps per inch, while the coarser wools like karakul may have as few as one to two crimps per inch.
- Many people consider themselves to be allergic to wool because they have an adverse reaction every time it touches their skin. However, a true allergy to wool is actually rare. Most people who have a reaction to wool do so because they have sensitive skin, and they would likely have a similar reaction to any coarse fiber.
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