I like how this product doesn't have a funny or odd taste. It has a slight odour of vanilla and doesn't leave a weird taste on your lips. It does work immediately, you can feel your lips start to plump upon applying it. The change is very minimal but you can feel the tingle and if you wait a few minutes to apply lipliner and lipstick you do feel your lips are a little fuller. I like the feeling of fuller lips as my top lip is too thin for my liking. I use this daily under my lipstick. My lips do appear slightly plumper, if anything it makes the slight creases and lines in my lips less noticeable.