When using the product it really makes your lips look more glossy and plump! It looks nice before or after using any other lipstick or maybe even alone.  However because you put it after applying your lipstick, it might stay on the wand/applicator and when you return it to the bottle it affects the color of the rest of the liquid so I advise to clean the wand/applicator before inserting it back in the tube. It feels a but tingly after a while when you put it on, but I don't really see my lips actually getting bigger, just the appearance of it looking plumper because it is glossy. Even so, I still like it and will use it a lot from now on!