This is to test the internal strength of the hair (the cortex). Hair that has been damaged due to chemical treatments may have lost much of its natural strength. This type of hair may stretch over two-thirds of its original length and may even break off. It is important to carry out this test before perming. Hair that is in good condition will stretch and then return to its original length.
Take one strand of hair and hold each end firmly between the thumb and forefinger of each hand and gently pull. If the hair stretches more than half of its original length then it is over elastic and may snap or break during chemical processing.
The best time to check the hair's elasticity is when it is wet.
what could happen if hair elasticity was not carried out
Dillon Freasier's Principal, A simple equasion to define elasticity.
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
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.
it is important to know wheater the bonds are already damaged or not
Grab one end in each hand an pull apart. If it breaks, fail.
Grab one end in each hand an pull apart. If it breaks, fail.
Double marker test is done by blood test.
Total expenditures depends on the quantity multiplied by the price!
Total expenditures depends on the quantity multiplied by the price!
Total expenditures depends on the quantity multiplied by the price!