They're alright, so far I haven't noticed any difference, but with further use, I think it can help brighten up my skin.
First off if you have sensitive skin this product is definitely not for you as it is somewhat abrasive. The smell was really nice very true to an actual lemon, and not perfume-like. As for exfoliating it definitely does the job, and after use my skin felt clean. Didn't really feel a difference in the brightness of my skin, but it definitely was much smoother.
I love this product. Out of the three different "flavors" this one is my favorite but the green tree one is also nice. Your skin simply feels so soft after using it.