You really have to just go see this for yourself.
According to the website:
The Features of Vitamin C Hand Shower
1 Perfect Chlorine Removal.
2 Change the Water(weak acid)
3 Water Saving (50%)
4 Convient to use in low water pressure.
5 Anion radiation.
Vitamin C Hand shower is effective for
* Atopy skin and allergy sufferers
* Infant and children
* Asthma sufferers
* Irritated-eyes after shower
* Shining your hair
* Women and children with sensitive skin
* Skin disease
* Who dyes hair often