Not visible results!

I have been using this product for more than a month (day and night) and I did not notice any visible result. The product is suppose to correct dark spots without altering the natural skin tone. I use sunscreen at least SPF 30 during daytime to speed up the process. This is a CLARINS product and I was hoping it will deliver its promise. I bought this for $85 (50ml) and it is a total rip off. I will not repruchase this product again even if it goes on sale. I am very disappointed!