You can determine the elasticity of your hair through the elasticity test as instructed in the article. You can perform a float test to determine [simple_tooltip text=hair porosity. tooltip=A hair strands quality to absorb and retain moisture, the knowledge of which can help one pick the right products for their hair. ] Take a couple of hair strands and drop them in a bowl of water. If the strands float, you have low porosity hair, if they sink, you have high porosity hair.