i'm still new to this forum so i don't know if this product has been reviewed before, but even if it has i'd just like to give my opinion:

about a month and a half ago i had extreme breakage, and nothing seemed to be helping.  i was so afraid i'd have to cut off about four inches to fix it, but luckily before it got to that point i found a wonderful new product: garnier fructis long & strong leave-in.  it said specifically on the label that it was meant to fix breakage and split ends, and it was only $3.99 so i figured, worth a try right?  WORTH WAY MORE THAN JUST A TRY.  after about a week of using it, my breakage was virtually gone.  i've been using it regularly for a while now, and the breakage has not returned.  even better than that- yesterday i was desperate and i reached for the straightening iron.  it didn't work as usual but managed to give me excessive breakage.  when i got home i washed my hair and applied the long & strong afterwards and by the time my hair was dry the damage was almost all gone.

conclusion- if you have split ends or breakage, garnier long & strong leave-in is your best friend.

FYI to all readers,

Long & Strong contains silicones. After a period of experimentation with L&S, it is recommended that you clarify your hair to check for breakage. Silicones have been associated with the creation of masked breakage for some hair types, especially curly or wavy, or fine stranded. The silicone can act as a "glue" to make the breakage not show until the glue is stripped away with a clarifier.

If silicones work for you Katja, that's WONDERFUL!!! I'm glad you found something that you really like. Silicones definitely work for my hair type too. I love my cones to the bitter end.

But they don't work for everyone, so folks, please be careful.

Anais 

hehe, i love my cones too.   

i didn't realize L&S had them until you pointed it out though- which seems odd to me because i'm an avid label reader- so i'd like to see what happens when i clarify.