Hello
You can try and speed up your hair growth by taking Vitamin B, Biotin and Zinc. There is no real proof that these work but these are a great safe way to increase your metabolism as well as feeding your hair from the inside which is vital in any quest to try and grow your hair at a soeedy rate. For the record though, your DNA determines how fast your hair grows and if its written in your genes that your hair is only meant to grow at a certain rate then thats how fast its going to grow unfortuantely. You can try the above mentioned vitamins as those are often key factors in hair growth products, but this has no real guarantee.