My hair is 75cm long. I must have tried over 20 different conditioners, this is the only product I will ever recommend to anyone (and a *lot* of people ask me about what products I use - if you have really long hair people will just stop you and say "wow your hair is really long" and then they start asking about hair care). My best advice is to leave it on as long as you can. Minimum of 5 mins! This is the only conditioner for me and I swear by it.