Nioxin SHampoo??

does it really grow back hair or just make your head look like you have a lot of hair?? b/c im really confused..my doctor told me to use it IM 15...and i went to ULTA and there was this woman who came to get more and she was lyk ive been using it for 18months and i havent seen much improvement, she had really short and thinning hair btwNioxin SHampoo??
i have been using nioxin for a while now! it really does grow back hair and it also makes it look thicker!

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