The best time to check the hair's elasticity is when it is wet.
what could happen if hair elasticity was not carried out
it is important to know wheater the bonds are already damaged or not
test for hair strength, which is done by any service,is carried out. pull a hair between your fingers, does it stretch and spring back if the hair brakes easy the cortex is damaged so chemical processing will cause it to break
Test results, such as porosity and elasticity of the hair, can indicate how the hair will react to the coloring service. This information helps the hairstylist choose the right products and techniques to achieve the desired color without damaging the hair. Test results also help in predicting the longevity and vibrancy of the color.
Your hair consists of hair shafts. A hair shaft is composed of scales that become raised through general daily wear and ear and you will notice your hair becoming dull and lifeless the more these scales are raised. The hair will also lose some of its elasticity, which leads to breakage. The conditioner can help you gain some of that elasticity back.
It depends on the elasticity & overall health of the hair.
Dillon Freasier's Principal, A simple equasion to define elasticity.
it is important to know wheater the bonds are already damaged or not
I assume that when you say "elasticity," you mean "price elasticity of demand."Raise price a little. If total revenue goes up, you're in the INELASTIC region (where absolute value of elasticity is greater than 1). If it goes down, you're in the ELASTIC region.
they swab the mouth no hair test.
its hair FOLLICLE test and you need hair razor.