I can't speak to long-term use yet, but so far I'm very happy with this shampoo! I have very thin, fine, curly hair, and I've been battling with hair loss for years. After the first use my hair looks and feels slightly thicker! I've tried quit a few other thickening shampoos and they all stripped my hair to "squeaky clean" in an attempt to get body, but this just resulted in lots of flyaway frizz for me. This shampoo leaves my hair light, bouncy and full, but still silky. There's none of the sticky feeling you get with some shampoos that add body. The shampoo also made my scalp tingle a bit, which is exactly what an expensive scalp stimulating tonic I once used did. The tonic really helped to reduce hair loss over time, so I'm hoping this shampoo will do the same. I have a dry, sensitive scalp, and this shampoo didn't make it itchy. The smell is wonderful and it lathers up very well, really worth the price!

Have always been pleased with this shapoo.

Going through the menopause I noticed my hair getting thin on top. Also I clear my brush of a handful of hair everytime I brush iut. I bought this with the conditioner aswell. I used it alternately every other day. It does not contain all the rubbish that makes shampoo lather richly so put a small amout in your hand then rub hands together and smooth the shampoo all over your hair. It has a fresh smell and a fresh feel afterwards. My hair is definately showing signs of fuller volumne. I do not get hardly any hairs in my brush. This fact suddenly occurred to me when I went to clean the brush after brushing. I will definately be buying more. It is a great shampoo

I've been using /redken-cerafill-defy-shampoo for just over a year along with the conditioner & scalp treatment I myself have noticed a difference in my hair & so have others, my small bald patches now have new hair growth & the hair is feeling & looking thicker. It feels & looks healthier. My hairdresser is so impressed with the result. A great product 

My hair feels stronger and slightly thicker. I have been using it with the Cerafill Defy Conditioner for a few months.