how long does biotin take to see results? Does it work as fast as in 1 or 2 weeks normally? I had long luscious tresses before I started on many medications, which eventually led to major hair fall and thinning of hair. I have stopped all my medications now and have started on a 60 day dose of biotin. It has been 2 weeks now but I do not see much of an improvement. Those of you, who have taken biotin, can you please tell me how long the medicine will take to show results. I am on a 5mg dose and I hope there will be some improvement after 60 days. My hair has thinned a lot and I miss my thick locks. Does anyone know how much time it will take for biotin to show results and fetch me my thick hair back? I feel very upset and depressed because of hair thinning. Please reply!! I will feel better.