Before surgery I started drinking biotin & I purchase online nioxin # 4 Shampoo & conditioner My hair was already thinning before surgery , I guess from all the stress post surgery . Lol
But , it has help me lot to maintain from losing lots more . I know it's a bit Expensive . but online u can buy the 33 oz kit for around $40 to $ 50 with shipping
Try amazon . I also purchase the styling gel , I have Curly hair , this helps it a lot .
Hope this helps