How do I apply hair product all over scalp?

I have a product that says:





';Shake prior to use. After shampooing and conditioning hair apply over entire scalp. Massage gently and deeply. Do not rinse. Style as usual. For daily use. Avoid contact with eyes. External use only.';





Thing is, I'm not sure how to apply the product over the entire scalp, how do I know if I applied it entirely without spraying like a hundred sprays?





Thanks.How do I apply hair product all over scalp?
1) spray it in your hair and massage your sclap.





or





2) part your hair into small sections and apply it to the scalp that way.