How do you test Elasticity on hair?

To test hair elasticity, take a small, clean strand of hair and gently stretch it between your fingers. If the hair stretches and returns to its original length without breaking, it has good elasticity. However, if it breaks easily or does not return to its original shape, it indicates low elasticity, often due to damage or dryness. It's best to perform this test on damp hair for more accurate results.