I have been wondering if Vitamin C serum would be as effective if applied after moisturizer instead of before? My reasoning is that the moisturizer sinks into the skin and I always feel like the Vitamin C serum stays on top of the skin which probably blocks the moisturizer absorbing into the skin? Vitamin C. Serum gives my skin a smooth translucent effect when I use it alone but after I apply moisturizer the translucent effect is no longer visible. Some days I only use Vitamin C Serum alone for that reason so, I was wondering if I applied the Vitamin C Serum after the mositurizer if the Vit. C would still work as well?