India, Oct. 28 -- We have all come across the word pH in reference to food. But did you know that the pH scale, which is used to ascertain the degree of acidity or basicity of a chemical substance, is helpful to measure hair and skin health as well. Our hair's pH value holds significance as it reveals its overall health. There are various factors that may affect the pH value of hair, ranging from the products we use to hair treatments. However, one can take certain measures to help maintain the right pH levels and ensure our tresses stay healthy! Read on......