I've used Cellex C for many years, but recently chose a less expensive brand....

I've used Cellex C for many years, but recently chose a less expensive brand. I returned to Cellex C and could definitely see a difference in the depth and quantity of lines and wrinkles. Even in Vitamin C serums, all products are not equal. As for using the 2-step Kit, I may try the "C serum" alone and see whether I need to purchase both. I have an excellent moisturizer and may not need both products. I especially like the fact that these serums are good for skin and also protective against damage.