After chemo my hair came back slower than I would have thought. It was almost a year before I was comfortable going out without a hat or wig. (I was so traumatized by hair loss that I covered my mirrors and wouldn'tlet anyone see me without a hat or wig). On the recommendation of a hair dresser with many cancer customers, I started using Nioxin shampoo and conditioner. My hair did grow back unevenly, but after two years it is all shoulder length (the back grew faster and has already had several inches trimmed). You will have chemo hair for at least a year, curly and mostly white. I'm now seeing a lot of my natural color coming in, but I'm 68 and had been coloring my hair prior to chemo so I've no idea of how much gray I had before. My hair is now very healthy, but thinner than it was which I contribute to the natural aging process but also to AI's. I'm on Letrozole. I had been on Anastrozole for the 1st year after chemo. My hairdresser carries Nioxin, but I've also purchased it on Amazon. Hope this helps.