The document you provided seems to be asking about the growth rate of hair or how long it takes for hair to grow a certain length. Based on the information provided, it appears that the growth rate of hair is approximately half an inch per month. Therefore, if someone has hair that is 1.5 inches long, it would take approximately three months for that hair to grow out another half an inch. Keep in mind that this is a general estimate and the actual growth rate can vary depending on various factors such as the individual's hair type, growth habits, and the environment in which the hair is grown.