It's not possible, the only way for it to work is if you were to take immunosuppressive drugs for the rest of your life, similar to an organ transplant. No doctor would ever prescribe these for anything other than a life threatening disease or else they would be locked up in jail. Even if you could get a doctor to do this, these drugs are very expensive, about $30K a year, and are very dangerous and would significantly shorten your life expectancy.
The major histocompatibility complex is a set of surface proteins that distinguish self from non-self cells. If you transplant soneone elses hair on your head your immune system will recognize it as a foreign invader and attack it. This question has been asked many times on the forums, and the short story is no it's not possible.