The following regime is recommended by my Dermalogica beauty advisor. Come to think of it, I actually put up to 9 types of chemical products on my face!
1. Face oil (night only)
3. Eye cream (multi vitamin power firm) for day use and intensive eye repair for night use
4. Extreme C
6. Soothing/firming booster
8. Dynamic sun block
9. Skin perfect primer (optional if product 8 is used)
Oh..yes! I have almost forgotten my cleanser prior to application of the above. It's never cheap to have nice looking skin!