After radiation treatment, if you have hair loss, I generally recommend for you to wait a full year. If you still do not grow out your hair by then, or while you are waiting, the use of topical minoxidil can be effective at stimulating hair and that will take about a year to see the full benefits, about the time any hair that was not killed off from the radiation starts to grow.For men with radiation and significant hair loss, we recommend the use of Scalpmicropigmentation (SMP) which can radically change the look of the man. If there is an significant residual hair, the use of SMP below the hair can make it look much fuller and this is very effective if there is any significant amount of hair. For men, the idea that they can shave their head and develop a bold look of a shaved head is shown nicely on the videos on the website below. The results from shaving the head will make you look like you have a full head of normal hair (shaved). At a recent medical meeting where I brought a patient with me and discussed him with over 600 doctors, his condition of Alopecia Totalis (no hair any place on his body) could not be detected as he showed off his normal looking 'shaved head of hair" or at least the illusion of it. Not one doctor in the audience who met the patient during the coffee break, could tell he did not have a shaved head of hair.