It has happened to me quiet frequently where I thought I had all the shampoo/conditoner out after spending quiet a few minutes at it and then I come out and start brushing my hair and its all slippery as if there is still some left in there.
Is there any effect on the hair is this happens quiet often? Any ideas as to how to prevent this?
By the way, I wash my hair straight down...I dont crumple it up or massage ir rigorously because I want to avoid tangles/hair breaking as much as possible. Would this be a reason?

Thanks.
Wow thanks so much...I actually do have dandruff despite having Head and Shoulders as my main shampoo. I lack patience frankly, but I guess I'll have to adjust and spend quiet a long time getting it all out of my very thick and quiet long hair.

I'v heard that sometimes it can make your head itch.

your hair will fall off and you'll go bald..

Not getting all the shampoo/conditioner rinsed out will damage your hair and lead to build up that can damage your scalp. The buildup blocks your pores which makes it difficult for your hair to grow and also can lead to zits on your scalp!

You need to work the shampoo/conditioner throughout your hair and rinse it in a similar way. Also make sure you are using good shampoo/conditioner and not one that is filled with wax fillers.