There is a simple way you can test your hair’s porosity at home. You just need two things: a glass of water (use a clear glass) and a strand of hair. It is recommended that you try this after washing the product and build-up from your strands to get the most accurate reading. Start by combing your hair to release strands that are shedding, and then take those stands and drop them into your glass of water. Hair that is low porosity will float. Hair that is ‘normal’ porosity will float and then begin to sink slowly. Hair that is high porosity will sink immediately.