[Routine Help] Do you mix your serums/oils together/into moisturizer?

Beauty Tips For Body Care
Yo.See title. I use Vitamin C Serum, I recently got Keihls Midnight Recovery Concentrate as a gift, and I've been eyeing argan oil for a while. Do you guys layer these on separately or mix them in with each other/a moisturizer. If it makes a difference, I've been using Clinique Moisture Surge Extended Thirst Relief and sometimes coconut oil at night.Any wisdom to share? Thanks!
Girls Blog 2015
Submitted by Renix