R+CoBRIGHT SHADOWS Root Touch-Up Spray Black 59 ml / 1.5 oz

Is this waterproof?

Does this cover white roots with a warm blonde shade?

Ive been highlighting my dark blonde, level 6, for years & now have major roots is the light blonde or dark blonde better for me?

Product arrived damaged and obviously has been used. What can be done regarding this issue since item cannot be returned?