I have struggled with thinning hair for the past five years or so since I entered menopause. I have multiple products without any improvement. I first purchased the MDhair serum months ago, and I must say that I am hooked. After six weeks, I started to feel less hair shedding, and now I can see some hair regrowth. I bought since then shampoo and conditioner. A bit expensive, but for me, it's life-changing. Great products.