As with any hair regrowth treatment, it often takes months before visible growth is seen. This is because hair loss and hair growth is not quick. By the time one notices visible hair thinning or hair loss, many months or years may have passed by where the roots were being slowly choked and deprived of the nutrients needed. Once HAIRMETTO is allowed to penetrate the roots for a length of time on a regular basis, the roots are being nourished back to health. The sooner you start, the sooner you will see results. If hair loss has occurred over many years, then regrowth may take longer than for someone who has experienced recent hair loss. This said, many start to see improved scalp and hair condition within days or weeks, and regrowth within 6 months.