Multi-Vitamin Serum

I am a huge nutrient buff- so needless to say, when I saw Laura Mercier had a concentrated multi-vitamin serum (C+E)- I was excited to try it out! The two serums have to be combined but I get...

This serum comes in two separate bottles for its oil and liquid components, which is to be mixed 1:1 before each use. I suppose it can be fun for secret chemists, and I was keen to go along until...