My best solution for a DIY lip stain that doesn't cost much. I tried kool-aid but it stings and dries my lips out. Lately I have been using this recipe for a lip stain that lasts all day, even through eating and drinking. 2 drops of red food coloring to one pea sized dollop of any kind of lip balm (I usually use carmex) I made a bunch of it and keep it in a jar. Apply to lips and don't eat/drink anything until dry. It lasts all day after that. Less food coloring=less intense color.