I've been taking ultra nourish hair with Extra biotin and msm 2xs a day for about a month and haven't noticed anything major. My nails are in better shape but my heat damaged bangs still don't seem to be growing in. I'll be back with an update once I've finished the bottle. I think that is a good time to measure results. Also do you all think the brand of vitamin makes a difference? I take cvs biotin and msm. Do u think that it matters?