- Hair has a very high resistance to mechanical factors. In order to rip a healthy adult human hair you should use a force to 160 kg / kv.cm.

- Hair is very flexible and elastic. Dry healthy hair can be a strained 20-30 percent of its lengh. Moistened with cold water hair can stretch up to 50 percent of its length. Once the straining stops, healthy hair will quickly return to its primary length.

- By its resilience and elasticity hair equals aluminum (one hair can withstand up to 200 grams in weight), no synthetic fiber of such a diameter can stand such a tension - they break apart.

- Hair retains heat - an air trapped in hair surrounds the skin underneath with film, preventing the heat loss, the more hair straight, the more they retain the air and heat.

- Thanks to skin secretion oils, that cover hair, a dust, hair styling product bits and piecies, serious smoke particles, car burning gas, etc. are being stopped.

- The hair has a good electrical conductivity, such as when hair is brush, it gets very quickly charged with static electricity.

- High resistance of the hair to decomposition shows the strength of hair biological agents.

- Hair has properties to collect some materials, this allows it to be used as an indicators. This property has been used for a long time in forensic.

- Human hair has the property to absorb moisture as well as glycerin, vegetable and animal fats; while absorbing hair volume can increases by 10-25 percent. On hair surface of the hair can remain without absorbtion some mineral oils, petroleum, jelly and Vaseline oils.

- Alkaline and acidic preparations reduce the hair elasticity, but also increase their ability to absorb water, thanks to this hair may 2-3 times increase its volume, By stretching and twisting hair with alkaline preparations on it, hair form changes irreversibly (chemical hair perm or straightening). Acidic products (hydrogen peroxide) makes hair thinner and reduces its elasticity, they become frizzy and breakable.