Spot test the lemon first as it is very acidic and could cause more harm than good. See how your skin takes it first(:
I use that! I SWEAR by it! My acne (before pregnancy) used to be terrible. I take a clean washcloth, dip in it some fresh lemon juice or if I'm lazy I use the stuff that comes in the plastic lemon (any citrus works really!) And then dip it in some sugar and gently scrub my whole face, neck, shoulders even my back if it needs it. Then rinse in warm water and apply some facial lotion or a little jojoba oil. Never have dry skin, the jojoba (after using for a month or more) keeps my face from getting too oily also. It got rid of every little bump and blemish and even reduced some scarring I had. Sorry this comment is so long! But I really really recommend this method of exfoliation.
I'll squeeze half a lemon and some baking soda together Till it'd a paste and then use it on my face
It works but be careful cause lemon juice can dry your face out