REDKENQuick Tease 15, Volume Lock Hair Spray, 3-in-1 Benefits: Volume, Texture, Control, 250 ml

can this be used on unwashed hair to style it

Can this be used as a styling spray on wet hair

Under ‘product details’ it says that a battery is required?? weird. it also says that the size is 150ml whilst the heading says it’s 250ml??