I think the combo is great.
The serum has a very light texture, it absorbs quite quickly and does not leave a feeling of tightness (that is very important for me), I have noticed that my skin is more luminous.
The contour is one of the few I have tried that leaves the area comfortable with a small amount. The contour is my most problematic area (very dry and very dark) this cream made my contour was hydrated from the first day and the darkness has been attenuated and I look much better.