I’ve been using the Regrowth Serum every night before bed for about 11 months now. My hair feels stronger and thicker, and I’ve noticed some baby hairs starting to come in. The results aren’t dramatic yet, but definitely noticeable. Once I finish this bottle, I’ll be switching to the Restore Serum to see which one works better for me. Based on my experience, this serum seems to show results after at least 6 months, which is more progress than I ever had with other products I tried for years.