In reading, looks like Olay Regenerist Serum may be a good choice for a product with niaminicide. I think some of you have said that it has helped to even out your skin tone. Just curious if anyone is having success with this product? If using it in the morning, would I use it over my Skinceuticals CE Ferulic and under my mositurizer? Would I get the same benefits if I just use it at night?

Merry Christmas to All!