Hi forwardwash
I watched the video of the woman shampooing her hair.
I'm sorry, but it isn't possible for me to wash my hair like that in a sink. The woman in the vid has relatively short hair. She doesn't have to worry about it gathering on the bottom of the sink into a tangles mess, nor does she have to worry about her hair going down the drain. My hair is just too long to wash in any standard sink without serious repercussions. The best way for me to shampoo my hair at its current length is standing up. Though, even standing, when I tilt my head back, I still have to keep from stepping on it. Things get tricky when you have really long hair.
xoxo,
Anya