The surface of a wool fibre is covered by a thin protective membrane which gives wool an ability to shed water
The membrane protects water from readily penetrating into the individual wool fibres. When you consider that over 80% of carpet stains are water-based, you can begin to realize how important this property is - and how much natural protection is built into your wool carpet
Nature did indeed create wool to be a miracle fibre. That same membrane which is so waterproof still allows the fibre to absorb moisture in vapor form. Because of this absorbency, wool carpets tend to resist static electricity

The high moisture content of the fibre, along with the wool's protein constituents, gives wool carpets excellent natural flame resistance. The wool fibre will not support combustion. It is difficult to ignite and is self - extinguishable.
 
Charring can be easily brushed away. Thus, as well as being extremely safe, wool carpets retain their appearance even after minor burn damage from fireplace embers or cigarettes

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