How long does it take to grow hair 12 inches?

How long does it take to grow hair 12 inches?

If we assume (for the sake of example) that the measurement from the top of your head to the top of your shoulders is roughly 12 inches and that you have an average growth rate of ½ inch per month, it will take two years (or more) with excellent length retention for you to achieve shoulder length hair assuming that you …