I'm 30 plus days in and can already tell a difference. Thin spots are filling in, center of scalp also starting to thicken. Not much change in hairline but I do see a few sprouts trying to come out. I'd advise purchasing the 3 month supply. Overall happy with the thickening of top & back. I can't wait to see results over the next 3 months. Great product and would recommend to anyone. Stay consistent for best results.