I have not used booster over the last few months and my hair which is very fine coloured hair has thininned around my face area hairline. Only reason I was not using 3d booster was due to scalp and hair treatment I was using and thought this would have same effect so I am back using the hair booster and will continue as the results are incredible. I use nioxin system 3 shampoo and conditioner and will be returning using their products. I will still mix it up between brands but at present will be using only nioxin until my hair thickness picks up again. It may seem expensive but it is worth every cent.