The bottle's applicator nozzle allows for steady saturation of the hair.
U-GO LICE is a watery solution, so it is drippy. Have a towel handy.
 
Cover the shoulders and nape of neck with a towel (see note below).
Tip the head back and begin application to dry hair, applying from the forehead down the entire length of the hair until completely saturated.
You will see lice dropping off the hair or seeking a place on the scalp to escape to.
There is no need to lice-comb or shampoo, but it's okay to if you wish.
 
Note: Some people experience skin sensitivity on the back of the neck. 
Follow instructions on the bottle.