The number of PRF sessions needed varies depending on factors such as the cause and extent of hair loss. Starting PRF treatment earlier after hair loss onset tends to yield better results. In most cases of typical hair loss, around 4 PRF treatments are recommended, with about a month between each session.   Following this initial phase, maintenance treatments are usually suggested approximately every six months for the first year to sustain the achieved outcomes. After the first year, the frequency of PRF treatments can be adjusted based on the individual's hair regrowth progress.