Help! My 4 year old has lovely long (to her bum) hair but it is so thick I struggle to wash it. It's really hard to get it all thoroughly wet. I washed it this evening and as I rubbed the shampoo in I could see her scalp was pretty much dry even though I tried my best to get it all wet with jugs of water. Does anyone have any tips on the best way to deal with it? She doesn't want it cut, unfortunately!