How often do you use just a half a lemon, or tomato? I feel like it’s pretty regularly for me. I’ve taken to drinking warm water with lemon first thing in the morning after I read an article that listed the numerous advantages to that simple routine. So I just use one wedge of lemon every morning and put the rest of the lemon in a snack sized neat-os and it doesn’t dry out. I even think my skin is looking clearer because of it.