I have only tried the shampoo from this range. I started using it a few months ago and to begin with I did notice results. It did not really repair the split ends, but kind of stuck them back together. I knew this from areas that should have had split ends having a slightly different texture to the rest of the hair. Therefore from this my hair looked much better and less straggly.
However, of course overtime split ends do become worse that the shampoo cannot cope and make little difference and there's need for a good trim. Therefore I'm fairly happy with it, but I basically helps to mask the effects of split ends, not repair or prevent them.
I personally like Tresseme shampoo and conditioners and this one is no exception I do believe it repaired my ends for long enough until I got a haircut. It was a good product not great.