I had a period of severe breakage and shedding in Sept 2011 and started taking mega-doses (30,000 mcg) of biotin every day. I didn't have any breakouts or acne but I realized earlier this week that I haven't seen any significant changes in my hair, either. The breakage and shredding stopped once i changed my birth control. Don't know if the biotin had any effect. Do you think Silica or MSM give better results than Biotin?