1. Irregular, uneven, or delayed hair growth: Most of transplanted hair is shed after each session, over a period of 2-8 weeks. Generally, within 4 months, new hair growth begins. This may occur at irregular rates, with some hairs coarser, finer, darker, or lighter in color, or different in texture compared to the original hair.In these cases, occurrences eventually normalize. However, it may take 15 months or more from the start of the procedure, before cosmetically satisfactory results are seen.