This seems to be HG for many as it definitely gives that perfect brightness, however please be careful not to overdo with it if your skin is dry.
My mom was very happy at first, however, as the weather turned dry she found out that it made her allready dry skin even drier (FYI she used it only at night), so she started to use it less frequently until she stopped with it altogether as no moisturizers helped there.
My colleague, who has more oily skin, after 6 month use finds this product fantastic as it seems to normalize her skin and does wonders to her hyperpigmentation.
So keep in mind that your experience may vary depending on your skin and never ever forget to use the sunscreen while using it! Even if it's cloudy outside. Just don't. Or all that brightening effect will be lost.