Alopecia, which can be caused by stress, biological or chronic problems, and hair loss, is common for both men as well as women. Many factors can lead to hair loss, hair thinning or baldness, including premature hair loss. While there are many options for topical and over-the-counter treatments, most people prefer permanent hair transplantation. The obvious question is "How long does hair transplantation take?" Let's first Know more about the different methods of hair transplantation.