Unfortunately, I do not feel that this product achieved what it had intended to be for- for "One side highlights lips to create a beautiful youthful glow, while the other side defines lips for a perfect pouty look." I found the pencil quite hard to use as a lip definer as it seemed that it didn't really make a difference to the overall look of the lip or the application of lipstick. I originally bought it because I wanted something to help stop the feathering that came when applying lipstick however I found it quite hard to outline my lips with a natural shape.
HOWEVER, this product is an awesome natural lip colour. I use the defining side of the product as an all over lip colour and then I use the highlighting side just to lighten the colour a bit as otherwise it can look a bit too orange for my skin tone. I then apply a natural lip gloss over the top- looks awesome! So I will continue to use this product but not for its intended purpose and I will not repurchase