I have been using this for 2 weeks. I use it in the following way: cleanser -> toners -> moisturizer with spf20 - > Sculptinex.
The firming and tigtening effect is not obvious but i can feel it is working slowly. It is also a very good moisturizer. I am actually qutie satisfy with it's result so far and i like the roller applicator too. I hope more result will really appear after 4 to 8 weeks as it promise. For the price of $390/40ml, i think it is better than many anti-aging product i use before over $500. Hope more users will share their reviews here :)